| | Date | System |
|---|
| 10-Pin Bowling (Game Boy prototype) | | Game Boy |
| 1943: The Battle of Midway (Prototype B) | | NES |
| 1943: The Battle of Midway (Prototype C) | | NES |
| 1943: The Battle of Midway (Prototype) | | NES |
| 2002 World Cup PK (PAL prototype) | | NES |
| 2097 ROM Pack II | | Game Boy |
| 2420 ROM Pack V | | Game Boy |
| 2440 ROM Pack | | Game Boy |
| 3-D Genesis (prototype) | | Atari 2600 |
| 3-D Rubik's Cube (prototype) | | Atari 2600 |
| 3-D Zapper (Dec 15, 1982 prototype) | | Atari 2600 |
| 3-D Zapper (prototype 2) | | Atari 2600 |
| 3D Pocket Pool (Prototype) | | Game Boy Color |
| 4 in 1 (Feb 19, 1987 prototype) | | Atari 2600 |
| 40 Winks (Game Boy Color prototype) | | Game Boy Color |
| 8 in 1 (Nov 16, 1992 prototype) | | Atari 2600 |
| A Week of Garfield (Prototype) | | NES |
| A Week of Garfield (Ver 0.9 prototype) | | NES |
| A-Team (Mar 30, 1984 prototype) | | Atari 2600 |
| A-Team (May 8, 1984 prototype) | | Atari 2600 |
| AMF Bowling (Prototype) | | Game Boy Color |
| ATV Racing (Apr 7, 2000 prototype A) | | Game Boy Color |
| ATV Racing (Apr 7, 2000 prototype B) | | Game Boy Color |
| ATV Racing (Prototype A) | | Game Boy Color |
| ATV Racing (Prototype B) | | Game Boy Color |
| Absolute X (Prototype) | | Game Boy Color |
| Acolyte (Amstrad CPC prototype) | | Amstrad CPC |
| Actionauts (Jun 22, 1984 prototype) | | Atari 2600 |
| Addams Family (Aug 2, 1991 prototype) | | NES |
| Addams Family (Prototype B) | | NES |
| Adian no Tsue (Oct 29, 1986 prototype) | | FDS |
| Advanced Dungeons & Dragons: Heroes of the Lance (Amstrad CPC prototype) | | Amstrad CPC |
| Advanced Dungeons & Dragons: Heroes of the Lance (prototype) | | NES |
| Advanced Dungeons & Dragons: Hillsfar (Prototype) | | NES |
| Advanced Dungeons & Dragons: Pool of Radiance (Prototype) | | NES |
| Adventure Island II (Prototype) | | NES |
| Adventure Island III (Prototype) | | NES |
| Adventures in the Magic Kingdom (Early prototype) | | NES |
| Adventures in the Magic Kingdom (Prototype) | | NES |
| Adventures of Dr. Franken (Prototype) | | NES |
| Adventures of Rad Gravity (Jul 31, 1990 prototype) | | NES |
| Air Fortress (Mar 3, 1989 prototype) | | NES |
| Air Fortress (Prototype) | | FDS |
| Air Sea Battle (Robert Coppock Demo) | | Atari 2600 |
| Airball (Prototype C) | | NES |
| Airlock (prototype) | | Atari 2600 |
| Akuu Senki Raijin (Oct 14, 1987 prototype) | | FDS |
| Aladdin (Aug 23, 1994 prototype) | | NES |
| Aladdin (Dec 28, 1993 prototype) | | Game Gear |
| Aladdin (Jan 11, 1994 prototype) | | Game Gear |
| Aladdin (Jan 13, 1994 prototype) | | Game Gear |
| Aladdin (Jan 24, 1994 prototype) | | Game Gear |
| Alfred Chicken (Prototype) | | Game Boy |
| Alien Olympics 2044 AD (Jun 14, 1994 prototype) | | Game Boy |
| Alien Olympics 2044 AD (US prototype) | | Game Boy |
| Alien Olympics 2044 AD (prototype A) | | Game Boy |
| Alien Olympics 2044 AD (prototype B) | | Game Boy |
| Alien vs Predator (Dec 17, 1993 prototype) | | Atari Lynx |
| Aliens: Alien 2 (Dec 15, 1986 prototype) | | FDS |
| All Star Tennis 2000 (Localization prototype) | | Game Boy Color |
| All Star Tennis 2000 (Prototype) | | Game Boy Color |
| All Star Tennis 2000 (Sep 13, 1999 prototype) | | Game Boy Color |
| Alligator People (prototype) | | Atari 2600 |
| Alone in the Dark: The New Nightmare (February 21, 2001 prototype) | | Game Boy Color |
| Alone in the Dark: The New Nightmare (Prototype) | | Game Boy Color |
| Alpha Beam with Ernie (Dec 22, 1982 prototype) | | Atari 2600 |
| Alpha Beam with Ernie (May 5, 1983 prototype) | | Atari 2600 |
| Alpha Mission (Japanese prototype) | | NES |
| Altered Space: A 3-D Alien Adventure (Feb 15, 1991 prototype) | | Game Boy |
| Andre Agassi Tennis (Prototype) | | Game Gear |
| Androman on the Moon (prototype) | | Atari 2600 |
| Antz (Prototype) | | Game Boy Color |
| Aquaventure (Aug 12, 1983 prototype) | | Atari 2600 |
| Arcadia VI (Jun 24, 1991 prototype) | | NES |
| Archon (Prototype B) | | NES |
| Archon (Prototype) | | NES |
| Arkanoid II (prototype B) | | NES |
| Arkanoid II (prototype) | | NES |
| Arkyology (prototype) | | Atari 2600 |
| Level Pack | | Game Boy Color |
| Game Boy and NES source code | | NES |
| Asterix (Aug 1, 1983 prototype) | | Atari 2600 |
| Asterix (Feb 16, 1994 prototype) | | Game Gear |
| Asterix (Feb 22, 1994 prototype) | | Game Gear |
| Asterix (Jan 25, 1994 prototype) | | Game Gear |
| Asterix (Jul 27, 1983 prototype) | | Atari 2600 |
| Asterix (Localization prototype) | | Game Boy |
| Asterix (Mar 15, 1994 prototype) | | Game Gear |
| Asterix (Mar 16, 1994 prototype) | | Game Gear |
| Asterix (Mar 3, 1994 prototype) | | Game Gear |
| Asterix (Prototype A) | | Game Boy |
| Asterix (Prototype B) | | Game Boy |
| Asteroids (Game Boy Prototype) | | Game Boy |
| Astro Chase (Oct 25, 1983 prototype) | | Atari 2600 |
| Atlantis no Nazo (Prototype) | | NES |
| Atom Smasher (prototype) | | Atari 2600 |
| Austin Powers: Why Make Millions... (Sep 2, 2000 prototype) | | Game Boy Color |
| Austin Powers: Yeah, Baby, Yeah! (Sep 11, 2000 prototype) | | Game Boy Color |
| Ax Battler: A Legend of Golden Axe (Oct 8, 1991 prototype) | | Game Gear |
| Ayrton Senna's Super Monaco GP II (Prototype) | | Game Gear |
| B.C. Kid 2 (Game Boy prototype) | | Game Boy |
| Baby's Day Out (Game Boy prototype) | | Game Boy |
| Bad News Baseball (Prototype) | | NES |
| Bakushou!! Jinsei Gekijou (Early prototype) | | NES |
| Bakushou!! Jinsei Gekijou (Oct 13, 1988 prototype) | | NES |
| Baltron (prototype) | | NES |
| Banana (Earlier prototype) | | NES |
| Banana (Jun 30, 1986 prototype) | | NES |
| Barbie Super Model (Prototype) | | Game Gear |
| Barbie: Game Girl (Prototype) | | Game Boy |
| Bases Loaded (Dec 16, 1987 prototype) | | NES |
| Bashi Bazook: Morphoid Masher (May 29, 1989 prototype) | | NES |
| Batman (Aug 1989 prototype) | | NES |
| Batman (Earlier prototype) | | NES |
| Batman Returns (PAL prototype) | | NES |
| Batman: Return of the Joker (Prototype) | | NES |
| Battle Battle League (1992 prototype) | | FDS |
| Battle Ships (Prototype) | | Game Boy |
| Battlestorm (Amstrad CPC prototype) | | Amstrad CPC |
| Battletoads (Prototype) | | NES |
| Battlezone (May 12, 1983 prototype) | | Atari 2600 |
| Battlezone (May 2, 1983 prototype) | | Atari 2600 |
| Beach'n Ball (Nov 21, 2000 prototype) | | Game Boy Color |
| Bear Game (prototype) | | Atari 2600 |
| Beavis and Butt-Head (Game Gear Prototype) | | Game Gear |
| Beetlejuice (Prototype) | | NES |
| Berenstain Bears (Aug 1, 1994 prototype) | | Game Gear |
| Berenstain Bears (Aug 11, 1994 prototype A) | | Game Gear |
| Berenstain Bears (Aug 11, 1994 prototype) | | Game Gear |
| Berenstain Bears (Aug 12, 1994 prototype) | | Game Gear |
| Berenstain Bears (Aug 13, 1994 prototype) | | Game Gear |
| Berenstain Bears (Aug 14, 1994 prototype) | | Game Gear |
| Berenstain Bears (Aug 19, 1994 prototype) | | Game Gear |
| Berenstain Bears (Aug 20, 1994 prototype) | | Game Gear |
| Berenstain Bears (Aug 24, 1994 prototype) | | Game Gear |
| Berenstain Bears (Aug 25, 1994 prototype B) | | Game Gear |
| Berenstain Bears (Aug 26, 1994 prototype B) | | Game Gear |
| Berenstain Bears (Aug 26, 1994 prototype) | | Game Gear |
| Berenstain Bears (Aug 27, 1994 prototype) | | Game Gear |
| Berenstain Bears (Jul 15, 1994 prototype B) | | Game Gear |
| Berenstain Bears (Jul 21, 1994 prototype) | | Game Gear |
| Berenstain Bears (Jul 22, 1994 prototype) | | Game Gear |
| Berenstain Bears (Jul 27, 1994 prototype) | | Game Gear |
| Berenstain Bears (Jun 28, 1994 prototype) | | Game Gear |
| Big Bang Pro Wrestling (Prototype) | | Neo Geo Pocket Color |
| Big Bird's Egg Catch (Dec 8, 1982 prototype) | | Atari 2600 |
| Big Bird's Egg Catch (May 17, 1983 prototype) | | Atari 2600 |
| Big Bird's Egg Catch (May 2, 1983 prototype) | | Atari 2600 |
| Billiard Club (prototype) | | Game Boy Color |
| Bio Force Ape (Prototype) | | NES |
| Bio Force Ape (US Prototype) | | NES |
| Bionic Breakthrough (Jun 22, 1984 prototype) | | Atari 2600 |
| Bionic Breakthrough (prototype) | | Atari 2600 |
| Bionic Commando (Prototype) | | NES |
| Bird Week (prototype) | | NES |
| Blade Warrior (Prototype) | | Game Boy |
| Blaster Master (May 20, 1988 prototype) | | NES |
| Blaster Master Boy (Prototype) | | Game Boy |
| Block Out (Prototype) | | NES |
| Blueprint (prototype A) | | Atari 2600 |
| Blueprint (prototype B) | | Atari 2600 |
| Bobby's World (European Game Boy prototype) | | Game Boy |
| Bobby's World (US Game Boy prototype) | | Game Boy |
| Boggle (Aug 7, 1978 prototype) | | Atari 2600 |
| Bomb Jack (Prototype A) | | Game Boy |
| Bomb Jack (Prototype B) | | Game Boy |
| Bomberman II (Prototype) | | NES |
| Bomberman Selection (prototype 1) | | Game Boy Color |
| Bomberman Selection (prototype 2) | | Game Boy Color |
| Bonk's Adventure (Prototype) | | Game Boy |
| Bonkers Wax Up! (Dec 11, 1994 prototype) | | Game Gear |
| Bonkers Wax Up! (Dec 12, 1994 prototype D) | | Game Gear |
| Bonkers Wax Up! (Dec 3, 1994 prototype) | | Game Gear |
| Bonkers Wax Up! (Dec 5, 1994 prototype) | | Game Gear |
| Bonkers Wax Up! (Dec 7, 1994 prototype C) | | Game Gear |
| Bonkers Wax Up! (Dec 8, 1994 prototype B) | | Game Gear |
| Bonkers Wax Up! (Dec 8, 1994 prototype C) | | Game Gear |
| Bonkers Wax Up! (Nov 15, 1994 prototype) | | Game Gear |
| Bonkers Wax Up! (Nov 21, 1994 prototype) | | Game Gear |
| Bonkers Wax Up! (Nov 23, 1994 prototype) | | Game Gear |
| Bonkers Wax Up! (Nov 26, 1994 prototype) | | Game Gear |
| Bonkers Wax Up! (Nov 29, 1994 prototype) | | Game Gear |
| Bonkers Wax Up! (Oct 31, 1994 prototype) | | Game Gear |
| Boogerman: A Pick and Flick Adventure (Apr, 1996 Prototype) | | NES |
| Bounced (Lot Check prototype) | | Game Boy Color |
| Bouncin' Baby Bunnies (prototype) | | Atari 2600 |
| BreakThru! (Game Gear Prototype) | | Game Gear |
| Bubble Bobble (Dec 28, 1990 prototype) | | Game Boy |
| Bubble Bobble (Game Gear Prototype) | | Game Gear |
| Bubble Bobble (NES Prototype) | | NES |
| Bubble Ghost (Prototype) | | Game Boy |
| Bubsy II (Nov 10, 1994 prototype) | | Game Boy |
| Bugs Bunny (Aug 4, 1983 prototype) | | Atari 2600 |
| Bugs Bunny (Jun 20, 1983 prototype) | | Atari 2600 |
| Bushido Warrior (May 25, 1988 prototype) | | Amstrad CPC |
| Bust-a-Move Pocket (Prototype) | | Neo Geo Pocket Color |
| Buster Brothers (Prototype) | | Game Boy |
| Buzz & Waldog (Prototype B) | | NES |
| Buzz & Waldog (Prototype) | | NES |
| CJ: Elephant Fugitive (Oct 22, 1993 prototype) | | Game Gear |
| Cabal (Atari Lynx prototype) | | Atari Lynx |
| Cabbage Patch Kids: Adventures in the Park (Aug 21, 1984 prototype) | | Atari 2600 |
| Cabbage Patch Kids: Adventures in the Park (Jul 27, 1984 prototype) | | Atari 2600 |
| Cabbage Patch Kids: Adventures in the Park (Jun 14, 1984 prototype) | | Atari 2600 |
| Cabbage Patch Kids: Adventures in the Park (Jun 1984 prototype) | | Atari 2600 |
| Cabbage Patch Kids: Adventures in the Park (Jun 29, 1984 prototype) | | Atari 2600 |
| Cabbage Patch Kids: Adventures in the Park (May 24, 1984 prototype) | | Atari 2600 |
| Cabbage Patch Kids: Adventures in the Park (Sep 13, 1984 prototype A) | | Atari 2600 |
| Cabbage Patch Kids: Adventures in the Park (Sep 13, 1984 prototype B) | | Atari 2600 |
| Cabbage Patch Kids: Adventures in the Park (Sep 4, 1984 prototype) | | Atari 2600 |
| Cabbage Patch Kids: Adventures in the Park (Sep 7, 1984 prototype) | | Atari 2600 |
| Cadillac (sample) | | NES |
| Caesar's Palace (Prototype B) | | NES |
| Calculator (prototype) | | Game Boy |
| Caltron 9-in-1 (Prototype) | | NES |
| Cannon Fodder (Prototype) | | Game Boy Color |
| Care Bears (prototype) | | Atari 2600 |
| Carl Lewis Athletics 2000 (Prototype) | | Game Boy Color |
| Carmageddon (GBC prototype) | | Game Boy Color |
| Carmageddon TDR 2000 (prototype) | | Game Boy Color |
| Carnivalé (Game Boy Color prototype) | | Game Boy Color |
| Carrera (prototype) | | Game Boy Color |
| Casper (Game Boy Prototype) | | Game Boy |
| Castlequest (Prototype) | | NES |
| Cat Trax (prototype) | | Atari 2600 |
| Catrap (prototype) | | Game Boy |
| Cave Dude (Prototype) | | Game Gear |
| Caveman Ninja: Joe & Mac (Prototype) | | NES |
| Centipede (Atari Lynx prototype) | | Atari Lynx |
| Centipede (prototype) | | Atari 2600 |
| Chester Field: Ankoku Shin heno Chousen (Prototype) | | NES |
| Chester Field: Ankoku Shin heno Chousen (US prototype) | | NES |
| Chicago Syndicate (Jul 10, 1995 prototype) | | Game Gear |
| Chicago Syndicate (Jul 11, 1995 prototype) | | Game Gear |
| Chicago Syndicate (Jul 19, 1995 prototype) | | Game Gear |
| Chicago Syndicate (Jul 20, 1995 prototype) | | Game Gear |
| Chicago Syndicate (Jul 21, 1995 prototype B) | | Game Gear |
| Chicago Syndicate (Jul 21, 1995 prototype) | | Game Gear |
| Chicago Syndicate (Jul 27, 1995 prototype) | | Game Gear |
| Chicago Syndicate (Jul 3, 1995 prototype) | | Game Gear |
| Chicago Syndicate (Jul 5, 1995 prototype) | | Game Gear |
| Chicago Syndicate (Jul 6, 1995 prototype) | | Game Gear |
| Chicago Syndicate (Jun 1, 1995 prototype) | | Game Gear |
| Chicago Syndicate (Jun 12, 1995 prototype) | | Game Gear |
| Chicago Syndicate (Jun 14, 1995 prototype) | | Game Gear |
| Chicago Syndicate (Jun 19, 1995 prototype) | | Game Gear |
| Chicago Syndicate (Jun 20, 1995 prototype) | | Game Gear |
| Chicago Syndicate (Jun 22, 1995 prototype) | | Game Gear |
| Chicago Syndicate (Jun 26, 1995 prototype) | | Game Gear |
| Chicago Syndicate (Jun 28, 1995 prototype) | | Game Gear |
| Chicago Syndicate (Jun 29, 1995 prototype B) | | Game Gear |
| Chicago Syndicate (Jun 29, 1995 prototype) | | Game Gear |
| Chicago Syndicate (Jun 30, 1995 prototype B) | | Game Gear |
| Chicago Syndicate (Jun 5, 1995 prototype) | | Game Gear |
| Chicago Syndicate (Jun 7, 1995 prototype) | | Game Gear |
| Chicago Syndicate (Jun 8, 1995 prototype) | | Game Gear |
| Chicago Syndicate (Mar 20, 1995 prototype) | | Game Gear |
| Chicago Syndicate (May 5, 1995 prototype) | | Game Gear |
| Chip 'N Dale: Rescue Rangers (Prototype) | | NES |
| Chip's Challenge (v0.924B prototype) | | NES |
| Chou Majin Eiyuuden Wataru: Mazekko Monster (Prototype) | | Game Boy |
| Chuck Rock (Prototype) | | Game Gear |
| Chuck Yeager's Fighter Combat (Prototype) | | NES |
| Clash at Demonhead (Japanese prototype) | | NES |
| Color Dreams Color Test | | NES |
| Colors (2600 prototype) | | Atari 2600 |
| Columbus: Ougon no Yoake (Prototype) | | NES |
| Combat II (Fighter Command prototype) | | Atari 2600 |
| Combat II (Firefox prototype) | | Atari 2600 |
| Combat II (Jun 1, 1983 prototype) | | Atari 2600 |
| Combat II (Prototype) | | Atari 2600 |
| Contra (Sample Prototype) | | NES |
| Contra (Test Prototype) | | NES |
| Cool Bricks (Mar 24, 1999 prototype) | | Game Boy Color |
| Cool Bricks (May 10, 1999 prototype) | | Game Boy Color |
| Cool Cool Jam (Demo) | | Neo Geo Pocket Color |
| Cosmic Swarm (prototype) | | Atari 2600 |
| Cosmo Tank (US Prototype) | | Game Boy |
| Crack'ed (Nov 28, 1988 prototype) | | Atari 2600 |
| Crazy Cars II (Amstrad CPC demo) | | Amstrad CPC |
| Crazy Climber (prototype A) | | Atari 2600 |
| Crazy Climber (prototype B) | | Atari 2600 |
| Crazy Climber (prototype C) | | Atari 2600 |
| Crazy Climber (prototype D) | | Atari 2600 |
| Crazy Faces (Prototype) | | Game Gear |
| Crazy Land (May 27, 1991 prototype) | | NES |
| Criminal Persuit (NTSC prototype) | | Atari 2600 |
| Crisis Force (prototype) | | NES |
| Croc (Early prototype A) | | Game Boy Color |
| Croc (Early prototype B) | | Game Boy Color |
| Crossbow (Early prototype) | | NES |
| Crystal Castles (Jan 4, 1984 prototype) | | Atari 2600 |
| Cubicolor (prototype) | | Atari 2600 |
| Cutthroat Island (Sep 16, 1995 prototype) | | Game Gear |
| Cygnus Force (prototype) | | NES |
| Daemon's Gate (1993 prototype) | | Atari Lynx |
| Daemon's Gate (Feb 23, 1992 prototype) | | Atari Lynx |
| Daikatana (Apr 19, 2000 prototype) | | Game Boy Color |
| Dark Arms: Beast Busters (Prototype) | | Neo Geo Pocket Color |
| Dark Chambers (Nov 22, 1985 prototype) | | Atari 2600 |
| Darkwing Duck (Game Boy prototype) | | Game Boy |
| Darkwing Duck (NES prototype) | | NES |
| Dave Mirra Freestyle BMX (Dec 1, 1999 prototype A) | | Game Boy Color |
| Dave Mirra Freestyle BMX (Dec 1, 1999 prototype B) | | Game Boy Color |
| Dave Mirra Freestyle BMX (Feb 28, 2000 prototype) | | Game Boy Color |
| Dave Mirra Freestyle BMX (Jan 19, 2000 prototype) | | Game Boy Color |
| David Robinson's Supreme Court (Prototype) | | Game Gear |
| Day Dreamin' Davey (Prototype) | | NES |
| Dead Zone (Prototype) | | FDS |
| Death Race (prototype) | | NES |
| Death Track (Prototype) | | Game Boy |
| Defender (Nov 1981 prototype) | | Atari 2600 |
| Defender (Oct 30, 1981 prototype) | | Atari 2600 |
| Defenders of Dynatron City (Prototype) | | NES |
| Defenders of Oasis (Prototype) | | Game Gear |
| Deja Vu (April 28, 1990 prototype) | | NES |
| Deja Vu (Jul 3, 1990 prototype) | | NES |
| Deja Vu (May 15, 1990 prototype) | | NES |
| Deja Vu (May 8, 1990 prototype) | | NES |
| Dennis the Menace (Sep 13, 1993 prototype) | | Game Boy |
| Densetsu no Kishi: Elrond (Prototype) | | NES |
| Densha de Go! 2 (Prototype) | | Neo Geo Pocket Color |
| Desert Falcon (May 27, 1987 prototype) | | Atari 2600 |
| Dexterity (Mar 30, 1990 prototype) | | Game Boy |
| Diablo (Game Boy prototype) | | Game Boy |
| Die Maus (Prototype) | | Game Boy Color |
| Die Maus: Verrueckte Olympiade (Prototype) | | Game Boy Color |
| Digger T. Rock: The Legend of the Lost City (Prototype) | | NES |
| Dino Hockey (Dec 18, 1990 prototype) | | NES |
| Dino Hockey (Prototype) | | NES |
| Dinobasher Starring Bignose the Caveman (Game Gear Prototype) | | Game Gear |
| Disney's Dinosaur (Game Boy Color prototype) | | Game Boy Color |
| Dive Alert (Prototype) | | Neo Geo Pocket Color |
| Donald Duck's Speedboat (Apr 12, 1983 prototype) | | Atari 2600 |
| Donald Duck's Speedboat (Apr 18, 1983 prototype) | | Atari 2600 |
| Donkey Kong Land III (Prototype) | | Game Boy |
| Dot E Creator Contest | | FDS |
| Double Dragon (Game Gear prototype) | | Game Gear |
| Double Dragon (NES prototype) | | NES |
| Double Dragon II: The Revenge (sample) | | NES |
| Double Dragon III: The Sacred Stones (Tradewest prototype) | | NES |
| Dr. Franken (Game Boy Prototype) | | Game Boy |
| Dr. Franken (Prototype) | | Game Gear |
| Dr. Franken 3 (Jun 10, 1993 prototype) | | Game Boy |
| Dr. Mario (Apr 27, 1990 prototype) | | NES |
| Dr. Mario (Game Boy prototype) | | Game Boy |
| Dr. Mario (Prototype C) | | NES |
| Dr. Mario (Prototype) | | NES |
| Drac's Night Out (Prototype) | | NES |
| Dragon Ball Z: Legendary Super Warriors (English Prototype - All Features Unlocked) | | Game Boy Color |
| Dragon Ball Z: Legendary Super Warriors (French Prototype) | | Game Boy Color |
| Dragon Ball Z: Legendary Super Warriors (German Prototype - 1 3 20 03 02) | | Game Boy Color |
| Dragon Ball Z: Legendary Super Warriors (German Prototype - 11 04 02 No Cheat) | | Game Boy Color |
| Dragon Ball Z: Legendary Super Warriors (German Prototype - All Features Unlocked) | | Game Boy Color |
| Dragon Ball Z: Legendary Super Warriors (German Prototype) | | Game Boy Color |
| Dragon Ball Z: Legendary Super Warriors (Italian Prototype - All Features Unlocked) | | Game Boy Color |
| Dragon Ball Z: Legendary Super Warriors (Japanese Prototype - Cheat) | | Game Boy Color |
| Dragon Ball Z: Legendary Super Warriors (Japanese Prototype) | | Game Boy Color |
| Dragon Ball Z: Legendary Super Warriors (Spanish Prototype - All Features Unlocked) | | Game Boy Color |
| Dragon Ball Z: Legendary Super Warriors (Spanish Prototype) | | Game Boy Color |
| Dragon Dance (prototype) | | Game Boy Color |
| Dragon Warrior II (Prototype) | | NES |
| Dragon Wars (US Prototype) | | NES |
| Dragon: The Bruce Lee Story (Prototype) | | Game Gear |
| Dragonfire (May 21, 1982 prototype) | | Atari 2600 |
| Dragonstomper (Early prototype) | | Atari 2600 |
| Dragonstomper (Jul 23, 1982 prototype) | | Atari 2600 |
| Dragonstomper (Version 36 prototype) | | Atari 2600 |
| Dreamworld Pogie (Prototype) | | NES |
| Driver: You are the Wheelman (Prototype) | | Game Boy Color |
| Dropzone (Oct 23, 1992 prototype) | | Game Boy |
| Dropzone (Oct 6, 1992 prototype) | | NES |
| Druid: Kyoufu no Tobira (Dec 1987 prototype) | | FDS |
| DuckTales (Feb 5, 1989 Prototype) | | NES |
| DuckTales (Japanese prototype) | | NES |
| DuckTales (May 25, 1989 Prototype) | | NES |
| DuckTales 2 (PAL Prototype A) | | NES |
| DuckTales 2 (PAL Prototype B) | | NES |
| Dudes II (Prototype) | | NES |
| Dukes of Hazzard (prototype) | | Atari 2600 |
| Dumbo's Flying Circus (Apr 4, 1983 prototype) | | Atari 2600 |
| Dumbo's Flying Circus (Jul 11, 1983 prototype) | | Atari 2600 |
| Dumbo's Flying Circus (May 5, 1983 prototype) | | Atari 2600 |
| Dune (Jul 10, 1984 prototype) | | Atari 2600 |
| Dungeon Warrior (Prototype) | | Game Boy |
| Dynamite Headdy (Earlier Game Gear Prototype) | | Game Gear |
| Dynamite Headdy (Jul 1, 1994 prototype) | | Game Gear |
| Dynamite Headdy (Jul 5, 1994 prototype) | | Game Gear |
| Dynamite Headdy (Jul 6, 1994 prototype) | | Game Gear |
| Dynamite Headdy (Jun 15, 1994 prototype) | | Game Gear |
| E.T. the Extra-Terrestrial: Digital Companion (PAL prototype 1) | | Game Boy Color |
| EarthBound Beginnings ("Earth Bound" Prototype) | | NES |
| Earthworm Jim 2 (Test Version) | | NES |
| Ecco the Dolphin (EPROM 20 prototype) | | Game Gear |
| Ecco the Dolphin (Jun 14, 1993 prototype) | | Game Gear |
| Eclipse (prototype) | | Game Boy |
| Edd the Duck (prototype) | | Game Boy |
| Eddie’s Puzzle Time (Prototype) | | Game Boy |
| Eggerland: Souzou e no Tabidachi (Prototype) | | FDS |
| Elevator Action (Atari 2600 prototype) | | Atari 2600 |
| Elf Adventure (Apr 22, 1983 prototype) | | Atari 2600 |
| Elf Adventure (May 2, 1983 prototype) | | Atari 2600 |
| Elf Adventure (May 25, 1983 prototype) | | Atari 2600 |
| Elite (Feb 14, 1992 prototype) | | NES |
| Elk Attack (prototype) | | Atari 2600 |
| Entity (prototype) | | Atari 2600 |
| Entombed (1981 prototype) | | Atari 2600 |
| Entombed (Aug 20, 1982 prototype) | | Atari 2600 |
| Entombed (Jun 22, 1982 prototype) | | Atari 2600 |
| Entombed (Oct 22, 1982 prototype) | | Atari 2600 |
| Entombed (Oct 28, 1982 prototype) | | Atari 2600 |
| Equestriad 2001 (prototype) | | Game Boy Color |
| Ernie Els Golf (Jun 8, 1994 prototype) | | Game Gear |
| Escape from the Mindmaster (prototype A) | | Atari 2600 |
| Escape from the Mindmaster (prototype B) | | Atari 2600 |
| Exerion (PAL prototype) | | NES |
| Eye of the Beholder (Aug 10, 1993 prototype) | | Atari Lynx |
| Eye of the Beholder (prototype B) | | Atari Lynx |
| F-1 Race (Prototype) | | NES |
| F-1 World Grand Prix (Prototype) | | Game Boy Color |
| F-117A Stealth Fighter (Jul 9, 1992 prototype) | | NES |
| F-15 Strike Eagle (Prototype) | | NES |
| FMC Disk Card Checker (1.3) | | FDS |
| Famicom Shogi: Ryuu-Ou-Sen (prototype) | | NES |
| Famicom Tantei Club Part II: Ushiro ni Tatsu Shoujo: Zenpen (Prototype) | | FDS |
| Fantastic Voyage (Nov 4, 1982 prototype) | | Atari 2600 |
| Fatal Run (NTSC prototype) | | Atari 2600 |
| Felix the Cat (Prototype) | | Game Boy |
| Ferrari Grand Prix Challenge (Prototype) | | NES |
| Fester's Quest (Prototype) | | NES |
| Fighting Simulator World Champ (Prototype) | | NES |
| Final Fantasy (Prototype) | | NES |
| Final Fantasy II (US Prototype) | | NES |
| Fireball (prototype) | | Atari 2600 |
| Fish (Dec 22, 1983 prototype) | | Atari 2600 |
| Flight of the Intruder (Prototype) | | NES |
| Flying Warriors (Prototype) | | NES |
| Formula 1 (Jun 16, 1998 prototype) | | Game Boy Color |
| Frankenstein's Monster (prototype) | | Atari 2600 |
| Frankenstein: The Monster Returns (Prototype) | | NES |
| Freedom Force (Dec 29, 1987 prototype) | | NES |
| Freeway (Human prototype) | | Atari 2600 |
| Frog (tech demo) | | Atari 2600 |
| Frog Pond (Aug 27, 1982 prototype) | | Atari 2600 |
| Frog Pond (prototype A) | | Atari 2600 |
| Frog Pond (prototype B) | | Atari 2600 |
| Frog Pond (prototype C) | | Atari 2600 |
| Frogger (Game Gear prototype) | | Game Gear |
| Frogger (March 31, 1999 prototype) | | Game Boy |
| Frogger (Prototype) | | Amstrad CPC |
| Frogger 2: Swampy's Revenge (Sound Test prototype) | | Game Boy Color |
| From TV Animation One Piece: Maboroshi no Grand Line Boukenki! (prototype 1) | | Game Boy Color |
| From TV Animation One Piece: Maboroshi no Grand Line Boukenki! (prototype 2) | | Game Boy Color |
| Frostbite (Jul 27, 1983 prototype) | | Atari 2600 |
| Full Court Press (prototype) | | Atari Lynx |
| Full Time Soccer (Aug 23, 2000 prototype) | | Game Boy Color |
| Full Time Soccer (Jun 26, 2000 prototype) | | Game Boy Color |
| Full Time Soccer (Sep 11, 2000 prototype) | | Game Boy Color |
| Funky Fish (prototype) | | Atari 2600 |
| G.I. Joe: The Atlantis Factor (Prototype B) | | NES |
| G.I. Joe: The Atlantis Factor (Prototype) | | NES |
| GP Rider (Jan 4, 1994 prototype) | | Game Gear |
| Galaga (1983 Atari prototype) | | NES |
| Galaxian (Feb 4, 1983 prototype) | | Atari 2600 |
| Galaxian (Jan 5, 1983 prototype) | | Atari 2600 |
| Galaxy 5000: Racing in the 51st Century (Prototype B) | | NES |
| Galaxy 5000: Racing in the 51st Century (Prototype) | | NES |
| Game Boy Bunko: Hajimari no Mori (Jun 3, 1999 prototype) | | Game Boy Color |
| Game Boy Color Sample Programs Version 1.10 (1998 Source Code) | | Game Boy Color |
| Ganso! Doubutstu Uranai GB+Renai Uranai Puzzle (prototype) | | Game Boy Color |
| Garfield (Jun 21, 1984 prototype) | | Atari 2600 |
| Gargoyle's Quest II (Jun 12, 1992 prototype) | | NES |
| Gauntlet (Feb 24, 1988 prototype) | | NES |
| Gauntlet II (Prototype) | | Game Boy |
| Gauntlet: The Third Encounter (Apr 6, 1990 prototype) | | Atari Lynx |
| Gekido (Sep 4, 2000 prototype) | | Game Boy Color |
| Geoduel (prototype) | | Atari Lynx |
| Get's!! LOTO Club (Game Boy Color prototype) | | Game Boy Color |
| Getsu Fuuma Den (prototype) | | NES |
| Ghost Lion (Mar 5, 1992 prototype) | | NES |
| Ghostbusters (Prototype) | | NES |
| Ghostbusters II (Game Boy Prototype) | | Game Boy |
| Ghoul School (Prototype) | | NES |
| Gimmick Land (prototype) | | Game Boy Color |
| Gimmick! (Japan prototype) | | NES |
| Global Gladiators (Jan 18, 1994 prototype) | | Game Boy |
| Global Gladiators (Jul 20, 1993 prototype) | | Game Boy |
| Global Gladiators (Jul 9, 1993 prototype) | | NES |
| Global Gladiators (Jun 16, 1993 prototype) | | NES |
| Global Gladiators (Jun 30, 1993 prototype) | | NES |
| Global Gladiators (May 28, 1993 prototype - A) | | NES |
| Global Gladiators (May 28, 1993 prototype) | | NES |
| Global Gladiators (Oct 10, 1993 prototype) | | Game Boy |
| Global Gladiators (Sep 27, 1993 prototype) | | Game Boy |
| Going-Up?? (prototype) | | Atari 2600 |
| Golf Diagnostic (Dec 16, 1983 prototype) | | Atari 2600 |
| Golf Grand Slam (Prototype) | | NES |
| Good Luck, Charlie Brown (Apr 18, 1984 prototype) | | Atari 2600 |
| Grand Casino (prototype) | | Game Boy Color |
| Gremlins 2: The New Batch (European prototype) | | NES |
| Gremlins 2: The New Batch (Prototype) | | NES |
| Gremlins 2: The New Batch (US prototype) | | NES |
| Gun.Smoke (Prototype) | | NES |
| Gyruss (Prototype A) | | Atari 2600 |
| Gyruss (Prototype B) | | Atari 2600 |
| HAL Wrestling (Prototype) | | Game Boy |
| Hamtaro: Ham-Hams Unite! (PAL prototype) | | Game Boy Color |
| Hang Time Basketball (Aug 29, 2000 prototype) | | Game Boy Color |
| Hang Time Basketball (Aug 31, 2000 prototype) | | Game Boy Color |
| Hang Time Basketball (Aug 5, 2000 prototype) | | Game Boy Color |
| Hang Time Basketball (Sep 2, 2000 prototype) | | Game Boy Color |
| Happily Ever After (Prototype) | | NES |
| Hard Drivin' (Prototype) | | NES |
| Hard-Head (USA prototype) | | Atari 2600 |
| Hatris (Prototype) | | NES |
| Haunted House (Aug 12, 1981 prototype) | | Atari 2600 |
| Heavy Shreddin' (prototype) | | NES |
| Hello Kitty Pocket Camera (prototype) | | Game Boy |
| HeroQuest (Aug 21, 1992 prototype) | | NES |
| HeroQuest (May 5, 1992 prototype) | | NES |
| High Speed (Feb 28, 1991 prototype) | | NES |
| Hill 19 (Amstrad CPC prototype) | | Amstrad CPC |
| Hit the Ice (May 11, 1992 prototype) | | Game Boy |
| Hit the Ice (Prototype A) | | NES |
| Hit the Ice (Prototype B) | | NES |
| Hitler no Fukkatsu: Top Secret (Japanese prototype) | | NES |
| Hobo (prototype) | | Atari 2600 |
| Hokuto no Ken (prototype) | | NES |
| Holey Moley (Feb 29, 1984 prototype) | | Atari 2600 |
| Home Alone 2: Kevin's Dream (prototype) | | Game Boy |
| Hook (Game Boy prototype) | | Game Boy |
| Hook (NES Prototype) | | NES |
| Hoops (Prototype) | | NES |
| Hoppin' Mad (prototype) | | NES |
| Hottarman no Chitei Tanken (prototype) | | NES |
| Hydra (Atari Lynx prototype) | | Atari Lynx |
| Ikinari Musician (Prototype) | | NES |
| Indora no Hikari (Aug 15, 1987 prototype) | | NES |
| Infinity | | Game Boy Color |
| Infogenius Productivity Pak: Berlitz German Translator (prototype) | | Game Boy |
| Infogenius Productivity Pak: Berlitz Japanese Translator (prototype) | | Game Boy |
| Inspector Gadget: Operation Madkactus (Prototype) | | Game Boy Color |
| Iron Tank: The Invasion of Normandy (Prototype) | | NES |
| Ixion (prototype) | | Atari 2600 |
| Jaguar Mishin Sashi Senyou Soft: Kirby Family (prototype) | | Game Boy Color |
| James Bond 007 (Prototype A) | | Atari 2600 |
| James Bond 007 (Prototype B) | | Atari 2600 |
| James Bond 007 (Prototype C) | | Atari 2600 |
| James Bond 007 (Prototype D) | | Atari 2600 |
| James Bond 007: The Duel (Jun 16, 1993 prototype) | | Game Gear |
| Jeep Jamboree: Off Road Adventure (Prototype) | | Game Boy |
| Jeopardy! (Game Gear prototype) | | Game Gear |
| Jet Pak Jak (Prototype) | | Game Boy |
| Jet Pak Man (Prototype) | | Game Boy |
| Jetpack (Prototype) | | Game Boy |
| Jibaku-kun: Zero no Ki no Kajitsu (prototype) | | Game Boy Color |
| Jimmy Connors Tennis (Prototype) | | Game Boy |
| Joe & Mac (Sep 28, 1992 Game Boy prototype) | | Game Boy |
| John Madden Football (Prototype A) | | Game Boy |
| John Madden Football (Prototype B) | | Game Boy |
| Jordan vs Bird: One on One (Prototype) | | NES |
| Kanji Boy 3 (prototype) | | Game Boy Color |
| Kanji Shishuu (prototype) | | Game Boy Color |
| Katakis 3D (prototype) | | Game Boy Color |
| Kick Off (Prototype) | | NES |
| Kick Off 3: European Challenge (Broken prototype) | | Game Boy |
| Kick Off 3: European Challenge (Game Boy prototype) | | Game Boy |
| Kickman (Jan 8, 1982 prototype) | | Atari 2600 |
| Kid Klown in Night Mayor World (Prototype) | | NES |
| Killer Satellites (prototype A) | | Atari 2600 |
| King Neptune's Adventure (Prototype) | | NES |
| King of Fighters R-1 & Melon-chan no Seichou Nikki (Prototype) | | Neo Geo Pocket Color |
| King of Fighters R-2 (Prototype) | | Neo Geo Pocket Color |
| Kitty's Catch (Prototype B) | | NES |
| Kiwi Kraze (Prototype) | | NES |
| KlashBall (Prototype) | | NES |
| Klax (Atari Lynx Prototype) | | Atari Lynx |
| Klax (NES Prototype) | | NES |
| Klustar (Early Prototype) | | Game Boy |
| Klustar (Oct 1, 1998 Europe Prototype) | | Game Boy Color |
| Klustar (Oct 1, 1998 Japanese Prototype) | | Game Boy Color |
| Konchuu Hakase 3 (Prototype) | | Game Boy Color |
| Krazy Kreatures (prototype) | | NES |
| Kung-Fu Master (Prototype) | | Game Boy |
| Kyuukyoku Harikiri Stadium (Prototype) | | NES |
| Learn and Play: Blackjack & Solitaire (Aug 9, 1994 prototype) | | Game Boy |
| Legend of Illusion Starring Mickey Mouse (Oct 11, 1994 prototype) | | Game Gear |
| Legend of Illusion Starring Mickey Mouse (Oct 14, 1994 prototype) | | Game Gear |
| Legend of Illusion Starring Mickey Mouse (Oct 17, 1994 prototype) | | Game Gear |
| Legend of Illusion Starring Mickey Mouse (Sep 22, 1994 prototype) | | Game Gear |
| Legend of Illusion Starring Mickey Mouse (Sep 30, 1994 prototype SEL) | | Game Gear |
| Legend of Illusion Starring Mickey Mouse (Sep 30, 1994 prototype) | | Game Gear |
| Legendary Wings (Prototype) | | NES |
| Lemmings (May 19, 1993 prototype) | | Game Boy |
| Lemmings 2: The Tribes (Game Gear Prototype) | | Game Gear |
| Lethal Weapon (Prototype) | | Game Boy |
| Little Nemo: The Dream Master (Prototype) | | NES |
| Looney Tunes Collector: Martian Alert! (Oct 28, 1999 prototype) | | Game Boy Color |
| Looney Tunes Collector: Martian Alert! (Prototype) | | Game Boy Color |
| Looping (prototype) | | Atari 2600 |
| Loopz (Nov 5, 1992 prototype) | | Atari Lynx |
| Loopz (Prototype) | | Game Boy |
| Loopz (Sep 16, 1992 prototype) | | Atari Lynx |
| Low G Man: The Low Gravity Man (Prototype) | | NES |
| Lucky Luke: Desperado Train (Prototype) | | Game Boy Color |
| M.C. Kids (Prototype B) | | NES |
| M.C. Kids (Prototype) | | NES |
| Madden NFL 2000 (prototype) | | Game Boy Color |
| Madou Monogatari III: Kyuukyoku Joou-sama (prototype) | | Game Gear |
| Magi Cube (prototype) | | NES |
| Magi-Nation: Keeper's Quest (prototype) | | Game Boy Color |
| Magic Darts (Prototype) | | NES |
| Magic Johnson's Fast Break (Prototype) | | NES |
| Magical Doropie (Prototype) | | NES |
| Magical Drop (Game Boy Color Prototype) | | Game Boy Color |
| Magical Drop (Neo Geo Pocket Prototype) | | Neo Geo Pocket Color |
| Magical Puzzle Popils (Incomplete prototype) | | NES |
| Magician (Mar 2, 1990 prototype) | | NES |
| Magician (Prototype A) | | NES |
| Magician (Prototype B) | | NES |
| Magician (Prototype D) | | NES |
| Makai Island (US prototype) | | NES |
| Malibu Bikini Volleyball (May 11, 1993 prototype) | | Atari Lynx |
| Maniac Mansion (NES Prototype) | | NES |
| Marble Madness (Prototype) | | NES |
| Mario's Picross (Jan 23, 1995 prototype) | | Game Boy |
| Marlboro Go! (English build) | | Atari Lynx |
| Marlboro Go! (German build) | | Atari Lynx |
| Max Steel: Covert Missions (prototype) | | Game Boy Color |
| Maxivision 30-in-1 (prototype) | | NES |
| Maxivision 30-in-1 Super Games (Aug 9, 1991 prototype) | | NES |
| Mayhem in Monsterland (Oct 18, 2000 prototype) | | Game Boy Color |
| Mega Man 3 (Prototype) | | NES |
| Mega Man III (US Sample) | | Game Boy |
| Mega Man IV (Prototype) | | NES |
| Mega Twins (Amstrad CPC prototype) | | Amstrad CPC |
| Mega Twins (Aug 12, 1991 prototype) | | Amstrad CPC |
| Metal Masters (Prototype) | | Game Boy |
| Metal Max (prototype) | | NES |
| Metal Slug - 2nd Mission (Trial) | | Neo Geo Pocket Color |
| Metal Walker (prototype) | | Game Boy Color |
| Mezase Pachi Pro: Pachio-kun (prototype) | | NES |
| Mickey Mouse III: Yume Fuusen (US Prototype) | | NES |
| Mickey's Adventures in Numberland (Prototype) | | NES |
| Mickey's Ultimate Challenge (Nov 12, 1993 prototype) | | Game Boy |
| Micro Machines (Oct 22, 1993 prototype) | | Game Gear |
| Micro Machines 1 and 2: Twin Turbo (Early prototype) | | Game Boy Color |
| Micro Machines 1 and 2: Twin Turbo (Late prototype) | | Game Boy Color |
| Micro Machines 1 and 2: Twin Turbo (Oct 14, 1999 prototype) | | Game Boy Color |
| Micro Machines 1 and 2: Twin Turbo (Prototype A) | | Game Boy Color |
| Micro Machines 1 and 2: Twin Turbo (Prototype B) | | Game Boy Color |
| Micro Machines 1 and 2: Twin Turbo (Prototype C) | | Game Boy Color |
| Micro Machines 1 and 2: Twin Turbo (Sep 23, 1999 prototype A) | | Game Boy Color |
| Micro Machines 1 and 2: Twin Turbo (Sep 23, 1999 prototype B) | | Game Boy Color |
| Micro Machines 2: Turbo Tournament (Game Boy Color prototype) | | Game Boy Color |
| Mighty Morphin Power Rangers (Aug 26, 1994 prototype) | | Game Gear |
| Mighty Morphin Power Rangers (Jul 16, 1994 prototype) | | Game Gear |
| Mighty Morphin Power Rangers (Prototype) | | Game Boy |
| Mighty Morphin Power Rangers - The Movie (May 30, 1995 prototype) | | Game Gear |
| Mike Ditka's Big Play Football (Prototype) | | NES |
| Mike Tyson's Punch-Out!! (prototype) | | NES |
| Millipede (Namco prototype) | | NES |
| Milon's Secret Castle (Prototype) | | NES |
| Mind Bender (Mar 4, 1991 prototype) | | Game Boy |
| Mini-Putt (Prototype) | | NES |
| Mission Bravo (prototype) | | Game Boy Color |
| Moero!! Junior Basket: Two on Two (Prototype) | | NES |
| Moero!! Pro Yakyuu (Famicom prototype) | | NES |
| Momoiro Zousan (prototype) | | Game Boy |
| Monster Max (Apr 1, 1993 prototype) | | Game Boy |
| Monster in My Pocket (Apr 22, 1991 prototype) | | NES |
| Moomin's Tale (Prototype) | | Game Boy Color |
| Mortal Kombat (Game Boy prototype) | | Game Boy |
| Mortal Kombat (Game Gear Prototype) | | Game Gear |
| Mr. Gimmick (June 18, 1992 prototype) | | NES |
| Muppet Adventure: Chaos at the Carnival (Prototype) | | NES |
| Mysterium (Jan 23, 1991 prototype) | | Game Boy |
| Mysterium (Prototype) | | Game Boy |
| NARC (Uncensored prototype) | | NES |
| NBA Action Starring David Robinson (Dec 1, 1993 prototype) | | Game Gear |
| NBA Action Starring David Robinson (Feb 12, 1994 prototype) | | Game Gear |
| NBA Action Starring David Robinson (Feb 15, 1994 prototype) | | Game Gear |
| NBA Action Starring David Robinson (Feb 17, 1994 prototype) | | Game Gear |
| NBA Action Starring David Robinson (Feb 2, 1994 prototype) | | Game Gear |
| NBA Action Starring David Robinson (Feb 20, 1994 prototype) | | Game Gear |
| NBA Action Starring David Robinson (Feb 21, 1994 prototype) | | Game Gear |
| NBA Action Starring David Robinson (Feb 24, 1994 prototype) | | Game Gear |
| NBA Action Starring David Robinson (Feb 25, 1994 prototype B) | | Game Gear |
| NBA Action Starring David Robinson (Feb 25, 1994 prototype) | | Game Gear |
| NBA Action Starring David Robinson (Feb 26, 1994 prototype) | | Game Gear |
| NBA Action Starring David Robinson (Feb 27, 1994 prototype) | | Game Gear |
| NBA Action Starring David Robinson (Feb 28, 1994 prototype A) | | Game Gear |
| NBA Action Starring David Robinson (Feb 28, 1994 prototype) | | Game Gear |
| NBA Action Starring David Robinson (Feb 3, 1994 prototype) | | Game Gear |
| NBA Action Starring David Robinson (Feb 6, 1994 prototype) | | Game Gear |
| NBA Action Starring David Robinson (Feb 8, 1994 prototype) | | Game Gear |
| NBA Action Starring David Robinson (Jan 10, 1994 prototype) | | Game Gear |
| NBA Action Starring David Robinson (Jan 24, 1994 prototype) | | Game Gear |
| NBA Action Starring David Robinson (Jan 29, 1994 prototype) | | Game Gear |
| NBA Action Starring David Robinson (Jan 4, 1994 prototype) | | Game Gear |
| NBA Action Starring David Robinson (Jan 6, 1994 prototype) | | Game Gear |
| NBA Action Starring David Robinson (Mar 1, 1994 prototype) | | Game Gear |
| NBA Action Starring David Robinson (Mar 11, 1994 prototype) | | Game Gear |
| NBA Action Starring David Robinson (Mar 2, 1994 prototype) | | Game Gear |
| NBA Action Starring David Robinson (Mar 3, 1994 prototype) | | Game Gear |
| NBA Action Starring David Robinson (Mar 4, 1994 prototype F) | | Game Gear |
| NBA Action Starring David Robinson (Mar 4, 1994 prototype) | | Game Gear |
| NBA Action Starring David Robinson (Mar 5, 1994 prototype) | | Game Gear |
| NBA Action Starring David Robinson (Mar 8, 1994 prototype) | | Game Gear |
| NBA Action Starring David Robinson (Nov 28, 1993 prototype) | | Game Gear |
| NBA Jam 2001 (Apr 17, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Apr 20, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Apr 28, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Apr 5, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Aug 10, 2000 prototype A) | | Game Boy Color |
| NBA Jam 2001 (Aug 10, 2000 prototype B) | | Game Boy Color |
| NBA Jam 2001 (Aug 11, 2000 prototype A) | | Game Boy Color |
| NBA Jam 2001 (Aug 11, 2000 prototype B) | | Game Boy Color |
| NBA Jam 2001 (Aug 12, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Aug 2, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Aug 22, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Aug 23, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Aug 25, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Aug 29, 2000 prototype A) | | Game Boy Color |
| NBA Jam 2001 (Aug 29, 2000 prototype B) | | Game Boy Color |
| NBA Jam 2001 (Aug 3, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Aug 30, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Aug 4, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Aug 7, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Aug 8, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Aug 9, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Dec 3, 1999 prototype) | | Game Boy Color |
| NBA Jam 2001 (Dec 6, 1999 prototype) | | Game Boy Color |
| NBA Jam 2001 (Feb 16, 2000 prototype A) | | Game Boy Color |
| NBA Jam 2001 (Feb 16, 2000 prototype B) | | Game Boy Color |
| NBA Jam 2001 (Feb 16, 2000 prototype C) | | Game Boy Color |
| NBA Jam 2001 (Feb 16, 2000 prototype D) | | Game Boy Color |
| NBA Jam 2001 (Feb 18, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Feb 21, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Feb 22, 2000 prototype A) | | Game Boy Color |
| NBA Jam 2001 (Feb 22, 2000 prototype B) | | Game Boy Color |
| NBA Jam 2001 (Feb 28, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Feb 29, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Feb 7, 2000 prototype A) | | Game Boy Color |
| NBA Jam 2001 (Feb 7, 2000 prototype D) | | Game Boy Color |
| NBA Jam 2001 (Jul 12, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Jul 13, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Jul 15, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Jul 17, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Jul 18, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Jul 21, 2000 prototype A) | | Game Boy Color |
| NBA Jam 2001 (Jul 21, 2000 prototype B) | | Game Boy Color |
| NBA Jam 2001 (Jul 24, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Jul 26, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Jul 31, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Jul 6, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Jun 16, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Jun 19, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Jun 21, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Jun 23, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Jun 27, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Jun 28, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Jun 9, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Mar 13, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Mar 17, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Mar 2, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Mar 24, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Mar 28, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Mar 29, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Mar 31, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Mar 6, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Mar 9, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (May 10, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (May 22, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (May 26, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (May 31, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (May 5, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (May 8, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Sep 1, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Sep 11, 2000 prototype A) | | Game Boy Color |
| NBA Jam 2001 (Sep 11, 2000 prototype B) | | Game Boy Color |
| NBA Jam 2001 (Sep 12, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Sep 13, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Sep 14, 2000 prototype A) | | Game Boy Color |
| NBA Jam 2001 (Sep 14, 2000 prototype B) | | Game Boy Color |
| NBA Jam 2001 (Sep 26, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Sep 6, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Sep 7, 2000 prototype A) | | Game Boy Color |
| NBA Jam 2001 (Sep 7, 2000 prototype B) | | Game Boy Color |
| NBA Jam 2001 (Sep 8, 2000 prototype) | | Game Boy Color |
| NBA Jam 2001 (Sep 9, 2000 prototype) | | Game Boy Color |
| NES Open Tournament Golf (Prototype) | | NES |
| NES Play Action Football (Prototype) | | NES |
| NFL '95 Game Gear (Aug 25, 1994 prototype A) | | Game Gear |
| NFL '95 Game Gear (Aug 25, 1994 prototype) | | Game Gear |
| NFL '95 Game Gear (Aug 26, 1994 prototype) | | Game Gear |
| NFL '95 Game Gear (Aug 31, 1994 prototype) | | Game Gear |
| NFL '95 Game Gear (Aug 8, 1994 prototype) | | Game Gear |
| NFL '95 Game Gear (Sep 10, 1994 prototype) | | Game Gear |
| NFL '95 Game Gear (Sep 11, 1994 prototype B) | | Game Gear |
| NFL '95 Game Gear (Sep 11, 1994 prototype C) | | Game Gear |
| NFL '95 Game Gear (Sep 12, 1994 prototype) | | Game Gear |
| NFL '95 Game Gear (Sep 14, 1994 prototype F) | | Game Gear |
| NFL '95 Game Gear (Sep 14, 1994 prototype) | | Game Gear |
| NFL '95 Game Gear (Sep 2, 1994 prototype) | | Game Gear |
| NFL '95 Game Gear (Sep 8, 1994 prototype) | | Game Gear |
| NHL All-Star Hockey (Dec 15, 1994 prototype) | | Game Gear |
| NHL All-Star Hockey (Dec 22, 1994 prototype) | | Game Gear |
| NHL All-Star Hockey (Dec 29, 1994 prototype) | | Game Gear |
| NHL All-Star Hockey (Dec 31, 1994 prototype) | | Game Gear |
| NHL All-Star Hockey (Jan 11, 1995 prototype) | | Game Gear |
| NHL All-Star Hockey (Jan 13, 1995 prototype) | | Game Gear |
| NHL All-Star Hockey (Jan 16, 1995 prototype) | | Game Gear |
| NHL All-Star Hockey (Jan 2, 1995 prototype) | | Game Gear |
| NHL All-Star Hockey (Jan 20, 1995 prototype) | | Game Gear |
| NHL All-Star Hockey (Jan 21, 1995 prototype) | | Game Gear |
| NHL All-Star Hockey (Jan 24, 1995 prototype A) | | Game Gear |
| NHL All-Star Hockey (Jan 24, 1995 prototype B) | | Game Gear |
| NHL All-Star Hockey (Jan 24, 1995 prototype C) | | Game Gear |
| NHL All-Star Hockey (Jan 24, 1995 prototype) | | Game Gear |
| NHL All-Star Hockey (Jan 25, 1995 prototype) | | Game Gear |
| NHL All-Star Hockey (Jan 26, 1995 prototype) | | Game Gear |
| NHL All-Star Hockey (Jan 3, 1995 prototype) | | Game Gear |
| NHL All-Star Hockey (Jan 7, 1995 prototype) | | Game Gear |
| Nakayoshi Cooking Series 5: Cake o Tsukurou (prototype 1) | | Game Boy Color |
| Nakayoshi Cooking Series 5: Cake o Tsukurou (prototype 2) | | Game Boy Color |
| Nantettatte!! Baseball (Dec 22, 1989 prototype) | | NES |
| Nazo Puyo: Arle no Roux (Prototype) | | Game Gear |
| Neo Baccarat (Prototype) | | Neo Geo Pocket Color |
| Neo Cherry Master Color: Real Casino Series (Prototype) | | Neo Geo Pocket Color |
| Network Boukenki Bugsite (Aug 9, 2001 prototype) | | Game Boy Color |
| New Ghostbusters II (USA Prototype) | | NES |
| Nick Faldo Championship Golf (prototype) | | Game Boy |
| Nigel Mansell's World Championship Racing (Prototype) | | NES |
| Nigel Mansell's World Championship Racing (Sep 29, 1992 prototype) | | NES |
| Ninja Crusaders (Prototype) | | NES |
| Ninja Gaiden (NES Prototype) | | NES |
| Ninja Gaiden II: The Dark Sword of Chaos (Jan 18, 1990 prototype) | | NES |
| Ninja Gaiden III: The Ancient Ship of Doom (Prototype) | | NES |
| Ninja Grannies (Amstrad CPC prototype) | | Amstrad CPC |
| Ninja Hattori-kun (prototype) | | NES |
| Ninja Jajamaru: Ginga Daisakusen (Prototype) | | NES |
| Ninja Nerd (Milestone 3 prototype) | | Atari Lynx |
| Ninja Taro (Nov 6, 1991 prototype) | | Game Boy |
| Ninja Taro (Prototype B) | | Game Boy |
| Nintendo Game Boy Aging Cartridge | | Game Boy |
| Nintendo Power GB Memory Cartridge (CS174) | | Game Boy |
| Nintendo Power GB Memory Cartridge (Seminar 98) | | Game Boy |
| Nishimura Kyoutarou Mystery: Blue Train Satsujin Jiken (Prototype) | | NES |
| Obelix (Prototype) | | Game Boy |
| Ochin ni Toshi Puzzle Tonjan! (Prototype) | | NES |
| Off the Wall (Jun 28, 1992 prototype) | | Game Gear |
| Oscar's Trash Race (Dec 3, 1982 prototype) | | Atari 2600 |
| Oscar's Trash Race (Mar 30, 1983 prototype) | | Atari 2600 |
| Oscar's Trash Race (Oct 20, 1982 prototype) | | Atari 2600 |
| Otocky (Prototype) | | FDS |
| Otto's Ottifanten (Prototype) | | Game Boy |
| Out of Gas (Prototype) | | Game Boy |
| Overlord (Prototype) | | NES |
| Pac-Man (Neo Geo Pocket Prototype) | | Neo Geo Pocket Color |
| Pac-Man (Prototype) | | NES |
| Pac-Man (Unlicensed prototype) | | NES |
| Pac-in-Time (Prototype) | | Game Gear |
| Pachinko Hisshou Guide: Pocket Parlor (Prototype) | | Neo Geo Pocket Color |
| Panic! Dizzy (Prototype) | | NES |
| Paperboy 2 (Prototype) | | Game Gear |
| Parodius (PAL Prototype) | | NES |
| Parody World: Monster Party (Japanese prototype) | | NES |
| Party Mail (Prototype) | | Neo Geo Pocket Color |
| Perfect Bowling (Prototype) | | NES |
| Pescatore (prototype) | | NES |
| Phaser Patrol (prototype A) | | Atari 2600 |
| Phaser Patrol (prototype B) | | Atari 2600 |
| Pick Up (prototype) | | Atari 2600 |
| Pinball: Revenge of the 'Gator (Prototype) | | Game Boy |
| Pipe Dream (Prototype) | | NES |
| Pit-Fighter (Oct 13, 1992 prototype) | | Atari Lynx |
| Planet of the Apes (Atari 2600 prototype) | | Atari 2600 |
| Planet of the Apes (prototype) | | Game Boy Color |
| Pleiades (Jun 5, 1983 prototype) | | Atari 2600 |
| Pocket Cooking (Prototype) | | Game Boy Color |
| Pokemon Silver (Jun 12, 2000 prototype) | | Game Boy |
| Poker (French prototype) | | Atari Lynx |
| Poker Face Paul's Cribbage (Jun 28, 1994 prototype) | | Game Gear |
| Pokémon Crystal (Apr 3, 2001 prototype) | | Game Boy |
| Pokémon Crystal (Apr 5, 2001 prototype) | | Game Boy |
| Pokémon Crystal (Dec 1, 2000 prototype) | | Game Boy |
| Pokémon Crystal (Dec 11, 2000 prototype) | | Game Boy |
| Pokémon Crystal (Dec 13, 2000 prototype) | | Game Boy |
| Pokémon Crystal (Dec 14, 2000 prototype) | | Game Boy |
| Pokémon Crystal (Dec 15, 2000 prototype) | | Game Boy |
| Pokémon Crystal (Dec 18, 2000 13:01 prototype) | | Game Boy |
| Pokémon Crystal (Dec 18, 2000 14:02 prototype) | | Game Boy |
| Pokémon Crystal (Dec 18, 2000 20:08 prototype) | | Game Boy |
| Pokémon Crystal (Dec 19, 2000 prototype) | | Game Boy |
| Pokémon Crystal (Dec 20, 2000 prototype) | | Game Boy |
| Pokémon Crystal (Dec 22, 2000 prototype) | | Game Boy |
| Pokémon Crystal (Dec 4, 2000 prototype) | | Game Boy |
| Pokémon Crystal (Dec 5, 2000 prototype) | | Game Boy |
| Pokémon Crystal (Dec 6, 2000 prototype) | | Game Boy |
| Pokémon Crystal (Dec 8, 2000 prototype) | | Game Boy |
| Pokémon Crystal (Feb 28, 2001 prototype) | | Game Boy |
| Pokémon Crystal (Feb 5, 2001 prototype) | | Game Boy |
| Pokémon Crystal (Jan 11, 2001 prototype) | | Game Boy |
| Pokémon Crystal (Jan 18, 2001 prototype) | | Game Boy |
| Pokémon Crystal (Jan 25, 2001 prototype) | | Game Boy |
| Pokémon Crystal (Jan 9, 2001 prototype) | | Game Boy |
| Pokémon Crystal (Jul 10, 2001 prototype) | | Game Boy |
| Pokémon Crystal (Mar 1, 2001 prototype) | | Game Boy |
| Pokémon Crystal (Mar 12, 2001 prototype) | | Game Boy |
| Pokémon Crystal (Mar 13, 2001 15:03 prototype) | | Game Boy |
| Pokémon Crystal (Mar 13, 2001 17:05 prototype) | | Game Boy |
| Pokémon Crystal (Mar 14, 2001 prototype) | | Game Boy |
| Pokémon Crystal (Mar 15, 2001 prototype) | | Game Boy |
| Pokémon Crystal (Mar 19, 2001 prototype) | | Game Boy |
| Pokémon Crystal (Mar 2, 2001 prototype) | | Game Boy |
| Pokémon Crystal (Mar 21, 2001 prototype) | | Game Boy |
| Pokémon Crystal (Mar 22, 2001 prototype) | | Game Boy |
| Pokémon Crystal (Mar 23, 2001 prototype) | | Game Boy |
| Pokémon Crystal (Mar 26, 2001 prototype) | | Game Boy |
| Pokémon Crystal (Mar 27, 2001 prototype) | | Game Boy |
| Pokémon Crystal (Mar 28, 2001 16:04 prototype) | | Game Boy |
| Pokémon Crystal (Mar 28, 2001 18:06 prototype) | | Game Boy |
| Pokémon Crystal (Mar 6, 2001 prototype) | | Game Boy |
| Pokémon Crystal (Mar 7, 2001 prototype) | | Game Boy |
| Pokémon Crystal (Mar 8, 2001 prototype) | | Game Boy |
| Pokémon Crystal (Mar 9, 2001 prototype) | | Game Boy |
| Pokémon Crystal (Nov 14, 2000 08:08 prototype) | | Game Boy |
| Pokémon Crystal (Nov 14, 2000 20:08 prototype) | | Game Boy |
| Pokémon Crystal (Nov 15, 2000 prototype) | | Game Boy |
| Pokémon Crystal (Nov 16, 2000 prototype) | | Game Boy |
| Pokémon Crystal (Nov 20, 2000 prototype) | | Game Boy |
| Pokémon Crystal (Nov 21, 2000 prototype) | | Game Boy |
| Pokémon Crystal (Nov 28, 2000 prototype) | | Game Boy |
| Pokémon Crystal (Nov 29, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Apr 24, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Apr 25, 2000 15:03 prototype) | | Game Boy |
| Pokémon Gold & Silver (Apr 25, 2000 23:17 prototype) | | Game Boy |
| Pokémon Gold & Silver (Apr 26, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Apr 27, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Apr 28, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Dec 1, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Dec 11, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Dec 12, 2000 18:46 prototype) | | Game Boy |
| Pokémon Gold & Silver (Dec 12, 2000 19:24 prototype) | | Game Boy |
| Pokémon Gold & Silver (Dec 13, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Dec 14, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Dec 15, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Dec 18, 2000 13:03 prototype) | | Game Boy |
| Pokémon Gold & Silver (Dec 18, 2000 21:06 prototype) | | Game Boy |
| Pokémon Gold & Silver (Dec 19, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Dec 20, 2000 18:23 prototype) | | Game Boy |
| Pokémon Gold & Silver (Dec 20, 2000 20:07 prototype) | | Game Boy |
| Pokémon Gold & Silver (Dec 25, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Dec 27, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Dec 28, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Dec 29, 2001 build) | | Game Boy |
| Pokémon Gold & Silver (Dec 4, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Dec 6, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Dec 7, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Dec 8, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Feb 21, 2002 build) | | Game Boy |
| Pokémon Gold & Silver (Feb 5, 2001 build) | | Game Boy |
| Pokémon Gold & Silver (Feb 7, 2001 prototype) | | Game Boy |
| Pokémon Gold & Silver (Jan 10, 2001 prototype) | | Game Boy |
| Pokémon Gold & Silver (Jan 12, 2001 17:05 prototype) | | Game Boy |
| Pokémon Gold & Silver (Jan 12, 2001 20:30 prototype) | | Game Boy |
| Pokémon Gold & Silver (Jan 15, 2001 prototype) | | Game Boy |
| Pokémon Gold & Silver (Jan 16, 2001 prototype) | | Game Boy |
| Pokémon Gold & Silver (Jan 17, 2001 prototype) | | Game Boy |
| Pokémon Gold & Silver (Jan 18, 2001 prototype) | | Game Boy |
| Pokémon Gold & Silver (Jan 19, 2001 prototype) | | Game Boy |
| Pokémon Gold & Silver (Jan 26, 2001 prototype) | | Game Boy |
| Pokémon Gold & Silver (Jan 29, 2001 prototype) | | Game Boy |
| Pokémon Gold & Silver (Jan 30, 2001 prototype) | | Game Boy |
| Pokémon Gold & Silver (Jan 5, 2001 prototype) | | Game Boy |
| Pokémon Gold & Silver (Jan 9, 2001 prototype) | | Game Boy |
| Pokémon Gold & Silver (Jul 3, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Jul 5, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Jul 6, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Jun 1, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Jun 12, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Jun 13, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Jun 15, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Jun 16, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Jun 19, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Jun 2, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Jun 20, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Jun 21, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Jun 22, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Jun 23, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Jun 26, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Jun 27, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Jun 28, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Jun 29, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Jun 30, 2000 15:00 prototype) | | Game Boy |
| Pokémon Gold & Silver (Jun 30, 2000 18:00 prototype) | | Game Boy |
| Pokémon Gold & Silver (Jun 6, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Jun 7, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Jun 8, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Jun 9, 2000 16:24 prototype) | | Game Boy |
| Pokémon Gold & Silver (Jun 9, 2000 22:32 prototype) | | Game Boy |
| Pokémon Gold & Silver (May 1, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (May 10, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (May 12, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (May 15, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (May 16, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (May 18, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (May 19, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (May 2, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (May 23, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (May 24, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (May 26, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (May 29, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (May 31, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (May 9, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Nov 10, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Nov 13, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Nov 14, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Nov 15, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Nov 16, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Nov 17, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Nov 20, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Nov 21, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Nov 29, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Nov 7, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Nov 8, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Nov 9, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Oct 16, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Oct 19, 2000 17:12 prototype) | | Game Boy |
| Pokémon Gold & Silver (Oct 19, 2000 22:13 prototype) | | Game Boy |
| Pokémon Gold & Silver (Oct 20, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Oct 23, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Oct 24, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Oct 25, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Oct 26, 1999 prototype) | | Game Boy |
| Pokémon Gold & Silver (Oct 26, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Oct 27, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Oct 30, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Oct 31, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Oct 5, 2000 prototype) | | Game Boy |
| Pokémon Gold & Silver (Oct 6, 1999 prototype) | | Game Boy |
| Pokémon Gold & Silver (Sep 29, 1999 prototype) | | Game Boy |
| Pokémon Gold & Silver (Sep 30, 1999 prototype) | | Game Boy |
| Pokémon Gold & Silver (Spaceworld 1997 Demo) | | Game Boy |
| Pokémon Gold & Silver (Spaceworld 1999 Demo) | | Game Boy |
| Pokémon Picross (Game Boy Color prototype) | | Game Boy Color |
| Pokémon Red/Blue (Blue Aug 5, 1998 prototype) | | Game Boy |
| Pokémon Silver (German Demo) | | Game Boy Color |
| Pokémon Yellow (Apr 28, 1999 prototype) | | Game Boy |
| Pokémon Yellow (Feb 10, 1999 prototype) | | Game Boy |
| Pokémon Yellow (Feb 15, 1999 prototype) | | Game Boy |
| Pokémon Yellow (Feb 16, 1999 prototype) | | Game Boy |
| Pokémon Yellow (Feb 17, 1999 prototype) | | Game Boy |
| Pokémon Yellow (Feb 18, 1999 prototype) | | Game Boy |
| Pokémon Yellow (Feb 22, 1999 07:28 prototype) | | Game Boy |
| Pokémon Yellow (Feb 22, 1999 10:38 prototype) | | Game Boy |
| Pokémon Yellow (Feb 3, 1999 09:29 prototype) | | Game Boy |
| Pokémon Yellow (Feb 3, 1999 13:07 prototype) | | Game Boy |
| Polaris SnoCross (Prototype) | | Game Boy Color |
| Police Academy (Nov 30, 1990 prototype) | | NES |
| Populous (Dec 10, 1992 prototype) | | Game Boy |
| Populous (European build) | | Game Boy |
| Populous (Feb 17, 1993 build) | | Game Boy |
| Populous (Game Boy prototype A) | | Game Boy |
| Populous (Game Boy prototype B) | | Game Boy |
| Populous (NES prototype) | | NES |
| Populous (Nov 26, 1992 prototype) | | Game Boy |
| Pounce! (prototype) | | Atari Lynx |
| Power Punch II (Prototype) | | NES |
| Primal Rage (Game Boy Prototype A) | | Game Boy |
| Primal Rage (Game Boy Prototype B) | | Game Boy |
| Prime (Jun 17, 1994 prototype) | | Game Gear |
| Prime (May 17, 1994 prototype) | | Game Gear |
| Prince of Persia (Altered build) | | Game Boy |
| Prince of Persia (Game Boy prototype) | | Game Boy |
| Prince of Persia (Prototype) | | Game Gear |
| Princess Tomato in the Salad Kingdom (Jun 30, 1990 prototype) | | NES |
| Pro Sport Hockey (Prototype) | | NES |
| Probotector 2 (Sample Prototype) | | Game Boy |
| Project S-11 (May 11, 2000 prototype) | | Game Boy Color |
| Pursuit of the Pink Panther (Prototype) | | Atari 2600 |
| Puss N Boots: Pero's Great Adventure (Japanese prototype) | | NES |
| Putty Squad (Nov 20, 1999 prototype) | | Game Boy Color |
| Puzzle (Prototype) | | NES |
| Puzzle Bobble Mini (Prototype) | | Neo Geo Pocket Color |
| Puzzle Link 2 (Prototype) | | Neo Geo Pocket Color |
| Q*Bert's Qubes (Jun 4, 1984 prototype) | | Atari 2600 |
| R-Type II (Prototype) | | Game Boy |
| R.B.I. Baseball 2 (Mar 7, 1990 prototype) | | NES |
| R2D Tank (prototype) | | Atari 2600 |
| Race Drivin' (Game Boy Prototype) | | Game Boy |
| Racer (prototype A) | | Atari 2600 |
| Racer (prototype B) | | Atari 2600 |
| Rad Racket: Deluxe Tennis II (Prototype) | | NES |
| Raging Fighter (Prototype) | | Game Boy |
| Raid 2020 (Dec 1989 prototype) | | NES |
| Rainbow Islands: The Story of Bubble Bobble 2 (Prototype) | | NES |
| Rally Bike (Prototype A) | | NES |
| Rally Bike (Prototype B) | | NES |
| Rampage: World Tour (Game Boy Color prototype) | | Game Boy Color |
| Rampart (Prototype) | | NES |
| Rampart (sample) | | NES |
| Rap Quest (prototype) | | Game Boy |
| Rayman 2 (prototype) | | Game Boy Color |
| Re-Volt (Apr 13, 2000 prototype) | | Game Boy Color |
| Re-Volt (Apr 5, 2000 prototype) | | Game Boy Color |
| Re-Volt (Dec 15, 1999 prototype) | | Game Boy Color |
| Re-Volt (Dec 17, 1999 prototype A) | | Game Boy Color |
| Re-Volt (Dec 17, 1999 prototype B) | | Game Boy Color |
| Re-Volt (Dec 24, 1999 prototype) | | Game Boy Color |
| Re-Volt (Dec 31, 1999 prototype A) | | Game Boy Color |
| Re-Volt (Dec 31, 1999 prototype B) | | Game Boy Color |
| Re-Volt (Feb 1, 2000 prototype) | | Game Boy Color |
| Re-Volt (Feb 18, 2000 prototype) | | Game Boy Color |
| Re-Volt (Feb 20, 2000 prototype) | | Game Boy Color |
| Re-Volt (Feb 25, 2000 prototype) | | Game Boy Color |
| Re-Volt (Feb 28, 2000 prototype) | | Game Boy Color |
| Re-Volt (Feb 29, 2000 prototype) | | Game Boy Color |
| Re-Volt (Feb 3, 2000 prototype) | | Game Boy Color |
| Re-Volt (Feb 4, 2000 prototype A) | | Game Boy Color |
| Re-Volt (Feb 4, 2000 prototype B) | | Game Boy Color |
| Re-Volt (Feb 7, 2000 prototype) | | Game Boy Color |
| Re-Volt (Feb 8, 2000 prototype) | | Game Boy Color |
| Re-Volt (Jan 14, 2000 prototype) | | Game Boy Color |
| Re-Volt (Jan 23, 2000 prototype) | | Game Boy Color |
| Re-Volt (Jan 25, 2000 prototype) | | Game Boy Color |
| Re-Volt (Jan 26, 2000 prototype) | | Game Boy Color |
| Re-Volt (Jan 29, 2000 prototype) | | Game Boy Color |
| Re-Volt (Jan 30, 2000 prototype) | | Game Boy Color |
| Re-Volt (Jan 4, 2000 prototype) | | Game Boy Color |
| Re-Volt (Mar 15, 2000 prototype) | | Game Boy Color |
| Re-Volt (Mar 16, 2000 prototype A) | | Game Boy Color |
| Re-Volt (Mar 16, 2000 prototype B) | | Game Boy Color |
| Re-Volt (Mar 2000 prototype) | | Game Boy Color |
| Re-Volt (Mar 22, 2000 prototype) | | Game Boy Color |
| Re-Volt (Mar 23, 2000 prototype) | | Game Boy Color |
| Re-Volt (Mar 6, 2000 prototype) | | Game Boy Color |
| Re-Volt (Mar 8, 2000 prototype) | | Game Boy Color |
| RealSports Baseball (Early prototype) | | Atari 2600 |
| RealSports Basketball (Jan 11, 1983 prototype) | | Atari 2600 |
| Renegade (Sep 14, 1987 prototype) | | NES |
| Resident Evil (Climax Game Boy prototype) | | Game Boy Color |
| Resident Evil (Early prototype) | | Game Boy Color |
| Resident Evil (Feb 14, 2000 prototype) | | Game Boy Color |
| Resident Evil (Final prototype) | | Game Boy Color |
| Resident Evil (Prototype) | | Game Boy Color |
| Riddick Bowe Boxing (Game Boy Prototype) | | Game Boy |
| Ristar (Nov 1, 1994 prototype) | | Game Gear |
| Ristar (Nov 2, 1994 prototype) | | Game Gear |
| Ristar (Oct 19, 1994 prototype) | | Game Gear |
| Ristar (Oct 24, 1994 prototype) | | Game Gear |
| Ristar (Sep 9, 1994 prototype) | | Game Gear |
| Road Rash (Aug 10, 2000 prototype) | | Game Boy Color |
| Road Rash (Aug 7, 2000 prototype) | | Game Boy Color |
| Road Rash (Game Boy Prototype) | | Game Boy |
| Road Riot 4WD (Atari Lynx prototype A) | | Atari Lynx |
| Road Riot 4WD (Atari Lynx prototype B) | | Atari Lynx |
| Road Riot 4WD (Atari Lynx prototype C) | | Atari Lynx |
| Road Riot 4WD (Atari Lynx prototype D) | | Atari Lynx |
| RoadBlasters (Prototype) | | NES |
| Robin Hood: Prince of Thieves (May 16, 1991 prototype) | | NES |
| RoboCop (NES Prototype) | | NES |
| RoboCop 2 (Prototype) | | NES |
| RoboCop Versus The Terminator (NES Prototype) | | NES |
| Robopon: Sun Version (prototype) | | Game Boy Color |
| Robotron: 2084 (Atari Lynx prototype) | | Atari Lynx |
| Rockin Kats (Prototype) | | NES |
| Rockman Battle & Fighters (Demo) | | Neo Geo Pocket Color |
| Rockman World (Prototype) | | Game Boy |
| Rocky and Bullwinkle (Apr 20, 1983 prototype) | | Atari 2600 |
| Rod Land (Prototype) | | Game Boy |
| Rolan's Curse (Prototype) | | Game Boy |
| Rolan's Curse II (Prototype) | | Game Boy |
| Rolling Thunder (Atari Lynx prototype) | | Atari Lynx |
| Runelords (prototype) | | Game Boy Color |
| Rush Hour (prototype A) | | Atari 2600 |
| Rygar (Prototype) | | NES |
| S.A.C. Alert (NTSC prototype) | | Atari 2600 |
| S.A.C. Alert (PAL prototype) | | Atari 2600 |
| S.C.A.T.: Special Cybernetic Attack Team (Prototype B) | | NES |
| S.C.A.T.: Special Cybernetic Attack Team (Prototype) | | NES |
| SNK vs. Capcom - Gekitotsu Card Fighters (Prototype) | | Neo Geo Pocket Color |
| SNK vs. Capcom - Gekitotsu Card Fighters (SNK Supporter Version) | | Neo Geo Pocket Color |
| Saboteur (Dec 20, 1983 prototype) | | Atari 2600 |
| Saboteur (Jun 15, 1983 prototype) | | Atari 2600 |
| Saboteur (Jun 9, 1983 prototype) | | Atari 2600 |
| Saboteur (May 20, 1983 prototype) | | Atari 2600 |
| Saboteur (Sep 2, 1983 prototype) | | Atari 2600 |
| Saiyuuki World (Prototype) | | NES |
| Samurai Shodown (Game Boy Prototype) | | Game Boy |
| San Francisco Rush: Extreme Racing (Game Boy Color Prototype) | | Game Boy Color |
| Sarakon (Prototype) | | Game Boy |
| Save the Whales (Feb 7, 1983 prototype) | | Atari 2600 |
| Scanner (Prototype) | | NES |
| Scarabeus (Prototype) | | NES |
| Sea-Doo HydroCross (Game Boy Color Prototype) | | Game Boy Color |
| SeaQuest DSV (Prototype) | | Game Boy |
| Secret Ties (prototype) | | NES |
| Sega Game Pack 4 in 1 (Prototype) | | Game Gear |
| Sensible Soccer (Aug 15, 1993 prototype) | | Game Boy |
| Sensible Soccer (Game Boy prototype) | | Game Boy |
| Sensible Soccer (NES prototype) | | NES |
| Sesame Street: Countdown (Prototype) | | NES |
| Shadow of the Ninja (Oct 16, 1990 prototype) | | NES |
| Shadowgate (NES Prototype) | | NES |
| Shadowgate (November, 1988 prototype) | | NES |
| Shanghai (Oct 16, 1986 prototype) | | NES |
| Shanghai Mini (Japan Prototype) | | Neo Geo Pocket Color |
| Shanghai Mini (US Prototype) | | Neo Geo Pocket Color |
| Shantae (Prototype) | | Game Boy Color |
| Shatterhand (Prototype) | | NES |
| Shin Nippon Pro Wrestling: Toukon Sanjushi (Prototype) | | Game Boy |
| Shining Force II (Apr 27, 1994 prototype) | | Game Gear |
| Shining Force II (Jul 20, 1994 prototype) | | Game Gear |
| Shining Force II (Jul 8, 1994 prototype) | | Game Gear |
| Shining Force II (Jun 27, 1994 prototype) | | Game Gear |
| Shining Force II (May 30, 1994 prototype) | | Game Gear |
| Shootin' Gallery (PAL prototype) | | Atari 2600 |
| Shutdown (Amstrad CPC prototype) | | Amstrad CPC |
| SilkWorm (Prototype) | | NES |
| SimCity (NES prototype) | | NES |
| Ski or Die (Prototype) | | NES |
| Skull & Crossbones (Prototype) | | NES |
| Sky Patrol (prototype) | | Atari 2600 |
| Snark (prototype) | | Atari 2600 |
| Snoopy Tennis (Prototype) | | Game Boy Color |
| Soccer Boy (sample) | | Game Boy |
| Solar Fox (Bob Curtiss prototype) | | Atari 2600 |
| Solaris (prototype) | | Atari 2600 |
| Solomon's Key (Prototype) | | NES |
| Solomon's Key 2 (Fire 'n Ice prototype) | | NES |
| Solstice: The Quest for the Staff of Demnos (prototype) | | NES |
| Some Metal Head (Dec 9, 1999 prototype) | | Game Boy Color |
| Sonar (prototype) | | Atari 2600 |
| Sonic & Tails (Demo) | | Game Gear |
| Sonic Blast (Aug 21, 1996 prototype) | | Game Gear |
| Sonic Blast (Aug 27, 1996 prototype) | | Game Gear |
| Sonic Blast (Aug 6, 1996 prototype) | | Game Gear |
| Sonic Blast (Jul 4, 1996 prototype) | | Game Gear |
| Sonic Blast (May 31, 1996 prototype) | | Game Gear |
| Sonic Blast (Sep 2, 1996 prototype) | | Game Gear |
| Sonic Blast (Sep 7, 1996 prototype) | | Game Gear |
| Sonic Chaos (May 17, 1993 prototype) | | Game Gear |
| Sonic Drift (Demo) | | Game Gear |
| Sonic Labyrinth (May 25, 1995 prototype) | | Game Gear |
| Sonic Spinball (Apr 12, 1994 prototype) | | Game Gear |
| Sonic Spinball (Apr 13, 1994 prototype) | | Game Gear |
| Sonic Spinball (Apr 15, 1994 prototype) | | Game Gear |
| Sonic Spinball (Apr 21, 1994 prototype) | | Game Gear |
| Sonic Spinball (Apr 27, 1994 prototype) | | Game Gear |
| Sonic Spinball (Apr 29, 1994 prototype B) | | Game Gear |
| Sonic Spinball (Apr 29, 1994 prototype) | | Game Gear |
| Sonic Spinball (Apr 5, 1994 prototype) | | Game Gear |
| Sonic Spinball (Mar 10, 1994 prototype) | | Game Gear |
| Sonic Spinball (Mar 11, 1994 prototype) | | Game Gear |
| Sonic Spinball (Mar 21, 1994 prototype) | | Game Gear |
| Sonic Spinball (Mar 28, 1994 prototype) | | Game Gear |
| Sonic Spinball (Mar 29, 1994 prototype) | | Game Gear |
| Sonic Spinball (Mar 30, 1994 prototype) | | Game Gear |
| Sonic Spinball (Mar 7, 1994 prototype) | | Game Gear |
| Sonic Spinball (May 25, 1994 prototype) | | Game Gear |
| Sonic Spinball (May 3, 1994 prototype) | | Game Gear |
| Sonic Spinball (May 30, 1994 prototype) | | Game Gear |
| Sonic Spinball (May 31, 1994 prototype) | | Game Gear |
| Sonic Spinball (May 5, 1994 prototype) | | Game Gear |
| Sonic Spinball (May 6, 1994 prototype) | | Game Gear |
| Sonic the Hedgehog (Game Gear Prototype) | | Game Gear |
| Sonic the Hedgehog - Triple Trouble (Aug 16, 1994 prototype) | | Game Gear |
| Sonic the Hedgehog - Triple Trouble (Aug 8, 1994 prototype) | | Game Gear |
| Sonic the Hedgehog 2 (Dec 5, 1991 Autodemo prototype) | | Game Gear |
| Sonic the Hedgehog Pocket Adventure (Demo) | | Neo Geo Pocket Color |
| Sonic the Hedgehog Pocket Adventure (Oct 22, 1999 prototype) | | Neo Geo Pocket Color |
| Sooty and Sweep 2 (Amstrad CPC prototype) | | Amstrad CPC |
| Sorcerer (prototype) | | Game Boy |
| South Park (Game Boy Color prototype) | | Game Boy Color |
| Space Hunter (Prototype A) | | NES |
| Space Hunter (Prototype B) | | NES |
| Space War (Atari Lynx prototype) | | Atari Lynx |
| Space-Net: Cosmo Neo (prototype) | | Game Boy Color |
| Speedy Gonzales Cheese Catastrophe (Feb 17, 1995 prototype) | | Game Gear |
| Spider-Man 3: Invasion of the Spider-Slayers (Apr 11, 1993 prototype) | | Game Boy |
| Spider-Man 3: Invasion of the Spider-Slayers (Prototype) | | Game Boy |
| Spiders (prototype) | | Atari 2600 |
| Spiritual Warfare (Prototype) | | NES |
| Spirou (Game Boy prototype) | | Game Boy |
| Spirou (Game Gear prototype) | | Game Gear |
| Splatterworld: Rick to Kyoufu no Daiou (Prototype) | | NES |
| Splitz (Altered build) | | Game Boy |
| Splitz (Aug 11, 1992 prototype) | | Game Boy |
| Splitz (Feb 17, 1993 prototype) | | Game Boy |
| Splitz (Jan 19, 1993 prototype) | | Game Boy |
| Splitz (Oct 28, 1992 prototype) | | Game Boy |
| Splitz (Sep 2, 1992 prototype) | | Game Boy |
| Sports Trivia (Apr 11, 1995 prototype 2MEG) | | Game Gear |
| Sports Trivia (Apr 12, 1995 prototype 2MEG) | | Game Gear |
| Sports Trivia (Apr 13, 1995 prototype 2MEG) | | Game Gear |
| Sports Trivia (Apr 25, 1995 prototype 1MEG) | | Game Gear |
| Sports Trivia (Apr 25, 1995 prototype QTEST) | | Game Gear |
| Sports Trivia (Apr 27, 1995 prototype 1MEG) | | Game Gear |
| Sports Trivia (Apr 28, 1995 prototype 2MEG) | | Game Gear |
| Sports Trivia (Apr 3, 1995 prototype 2MEG) | | Game Gear |
| Sports Trivia (Apr 3, 1995 prototype QTEST) | | Game Gear |
| Sports Trivia (Apr 4, 1995 prototype 2MEG) | | Game Gear |
| Sports Trivia (Apr 5, 1995 prototype 2MEG - B) | | Game Gear |
| Sports Trivia (Apr 5, 1995 prototype 2MEG - C) | | Game Gear |
| Sports Trivia (Apr 5, 1995 prototype QTEST) | | Game Gear |
| Sports Trivia (Apr 6, 1995 prototype 2MEG) | | Game Gear |
| Sports Trivia (Apr 7, 1995 prototype 2MEG) | | Game Gear |
| Sports Trivia (Apr 7, 1995 prototype QTEST) | | Game Gear |
| Sports Trivia (Mar 13, 1995 prototype) | | Game Gear |
| Sports Trivia (Mar 16, 1995 prototype 1MEG) | | Game Gear |
| Sports Trivia (Mar 16, 1995 prototype 2MEG) | | Game Gear |
| Sports Trivia (Mar 17, 1995 prototype 2MEG) | | Game Gear |
| Sports Trivia (Mar 20, 1995 prototype 2MEG) | | Game Gear |
| Sports Trivia (Mar 20, 1995 prototype QTEST) | | Game Gear |
| Sports Trivia (Mar 21, 1995 prototype 2MEG) | | Game Gear |
| Sports Trivia (Mar 23, 1995 prototype 2MEG) | | Game Gear |
| Sports Trivia (Mar 23, 1995 prototype ALGOTEST) | | Game Gear |
| Sports Trivia (Mar 23, 1995 prototype QTEST) | | Game Gear |
| Sports Trivia (Mar 27, 1995 prototype 2MEG) | | Game Gear |
| Sports Trivia (Mar 27, 1995 prototype ALGOTEST) | | Game Gear |
| Sports Trivia (Mar 29, 1995 prototype 2MEG) | | Game Gear |
| Sports Trivia (Mar 29, 1995 prototype ALGOTEST) | | Game Gear |
| Sports Trivia (Mar 29, 1995 prototype QTEST) | | Game Gear |
| Sports Trivia (Mar 30, 1995 prototype 2MEG - D) | | Game Gear |
| Sports Trivia (Mar 30, 1995 prototype QTEST) | | Game Gear |
| Sports Trivia (Mar 8, 1995 prototype) | | Game Gear |
| Sports Trivia (Mar 9, 1995 prototype) | | Game Gear |
| Sports Trivia (May 2, 1995 prototype 2MEG) | | Game Gear |
| Sports Trivia (May 4, 1995 prototype 1MEG) | | Game Gear |
| Spy vs Spy: The Island Caper (Prototype) | | NES |
| Square Deal (Prototype) | | NES |
| Squashed (US prototype) | | NES |
| Stanley: The Search for Dr. Livingston (Prototype A) | | NES |
| Stanley: The Search for Dr. Livingston (Prototype B) | | NES |
| Star Force (Prototype) | | NES |
| Star Soldier (Prototype) | | NES |
| Star Trek (Game Boy Color prototype) | | Game Boy Color |
| Star Trek V: The Final Frontier (Prototype) | | NES |
| Star Trek: The Next Generation (Prototype) | | Game Boy |
| Star Wars (USA NES Prototype) | | NES |
| Star Wars: Jedi Arena (prototype A) | | Atari 2600 |
| Star Wars: The Empire Strikes Back (NES Prototype A) | | NES |
| Star Wars: The Empire Strikes Back (NES Prototype B) | | NES |
| Street Battle (Prototype) | | Game Gear |
| Street Fighter 2010 (Bung Game Master Potential Prototype) | | NES |
| Street Fighter 2010: The Final Fight (Prototype) | | NES |
| Street Heroes (Prototype A) | | Game Gear |
| Street Heroes (Prototype B) | | Game Gear |
| Strider Hiryu (Prototype) | | NES |
| Strider Returns: Journey from Darkness (prototype) | | Game Gear |
| Suicide Mission (Feb 10, 1982 prototype) | | Atari 2600 |
| Sunman (Early Superman Prototype) | | NES |
| Sunman (Prototype) | | NES |
| Super Columns (Dec 15, 1994 prototype) | | Game Gear |
| Super Columns (Dec 21, 1994 prototype) | | Game Gear |
| Super Columns (Dec 26, 1994 prototype) | | Game Gear |
| Super Columns (Dec 28, 1994 prototype) | | Game Gear |
| Super Columns (Jan 6, 1995 prototype) | | Game Gear |
| Super Columns (Jan 9, 1995 prototype) | | Game Gear |
| Super Columns (Nov 11, 1994 prototype) | | Game Gear |
| Super Columns (Nov 30, 1994 prototype) | | Game Gear |
| Super Dimension Fortress Macross (prototype) | | NES |
| Super Glove Ball (Prototype) | | NES |
| Super Kick Off (Prototype) | | NES |
| Super Mario Bros. + Duck Hunt + World Class Track Meet (Prototype) | | NES |
| Super Mario Land 2: 6 Golden Coins (Oct 21, 1992 build) | | Game Boy |
| Super Off Road (Game Boy Prototype) | | Game Boy |
| Super Off Road (Game Gear Prototype) | | Game Gear |
| Super Pinball (May 15, 1988 prototype) | | NES |
| Super Pitfall II (Localization Prototype) | | NES |
| Super Scrabble (Prototype) | | Game Boy |
| Super Sushi Pinball (US prototype) | | NES |
| Superman (Game Gear prototype) | | Game Gear |
| Superman (Nov 3, 1987 prototype) | | NES |
| Superman: Battle for Metropolis (Jan 12, 2001 prototype) | | Game Boy Color |
| Suske en Wiske: De Tijdtemmers ~ Bob et Bobette: Les Dompteurs du Temps (Prototype A) | | Game Boy Color |
| Suske en Wiske: De Tijdtemmers ~ Bob et Bobette: Les Dompteurs du Temps (Prototype B) | | Game Boy Color |
| Sutte Hakkun (Game Boy prototype) | | Game Boy |
| Sutte Hakkun GB (August 17, 1998 prototype) | | Game Boy Color |
| Sweat!: The Decathlon Game (prototype A) | | Atari 2600 |
| Sweat!: The Decathlon Game (prototype B) | | Atari 2600 |
| Sweat!: The Decathlon Game (prototype C) | | Atari 2600 |
| Sweat!: The Decathlon Game (prototype D) | | Atari 2600 |
| Sweet Home (Prototype) | | NES |
| Swing (Prototype) | | Game Boy Color |
| Sword Master (May 15, 1991 prototype) | | NES |
| Sword Master (Prototype B) | | NES |
| Sword of Saros (Aug 5, 1983 prototype) | | Atari 2600 |
| SwordQuest: EarthWorld (prototype) | | Atari 2600 |
| Tails Adventure (Review Prototype) | | Game Gear |
| Takeshi no Sengoku Fuuunji (Jun 4, 1988 prototype) | | NES |
| Takeshi no Sengoku Fuuunji (prototype) | | NES |
| TaleSpin (Spanish Game Boy prototype) | | Game Boy |
| Tanigawa Kouji no Shogi Shinan II: Meijin e no Michi (Nov 13, 1987 prototype) | | FDS |
| Taro's Quest (US prototype) | | NES |
| Tarzan (Atari 2600 prototype) | | Atari 2600 |
| Taxi 2 (Prototype) | | Game Boy Color |
| Taz in Escape from Mars (Aug 10, 1994 prototype) | | Game Gear |
| Taz in Escape from Mars (Aug 14, 1994 prototype) | | Game Gear |
| Taz in Escape from Mars (Aug 19, 1994 prototype) | | Game Gear |
| Taz in Escape from Mars (Aug 21, 1994 prototype) | | Game Gear |
| Taz in Escape from Mars (Aug 23, 1994 prototype) | | Game Gear |
| Taz in Escape from Mars (Aug 29, 1994 prototype B) | | Game Gear |
| Taz in Escape from Mars (Aug 30, 1994 prototype) | | Game Gear |
| Taz in Escape from Mars (May 11, 1994 prototype) | | Game Gear |
| Taz in Escape from Mars (Sep 10, 1994 prototype B) | | Game Gear |
| Taz in Escape from Mars (Sep 10, 1994 prototype) | | Game Gear |
| Taz in Escape from Mars (Sep 13, 1994 prototype) | | Game Gear |
| Taz in Escape from Mars (Sep 2, 1994 prototype) | | Game Gear |
| Taz in Escape from Mars (Sep 5, 1994 prototype B) | | Game Gear |
| Taz in Escape from Mars (Sep 5, 1994 prototype C) | | Game Gear |
| Taz in Escape from Mars (Sep 6, 1994 prototype D) | | Game Gear |
| Taz in Escape from Mars (Sep 9, 1994 prototype B) | | Game Gear |
| Taz-Mania 2 (Prototype) | | Game Boy |
| Tecmo Bowl (Oct 12, 1987 prototype) | | NES |
| Tecmo Cup: Soccer Game (Prototype) | | NES |
| Tecmo Super Bowl (Aug 27, 1991 prototype) | | NES |
| Tecmo World Wrestling (Oct 20, 1989 prototype) | | NES |
| Teenage Mutant Ninja Turtles (Prototype) | | NES |
| Teenage Mutant Ninja Turtles II: Back from the Sewers (May 20, 1991 prototype) | | Game Boy |
| Teenage Mutant Ninja Turtles II: Back from the Sewers (Prototype B) | | Game Boy |
| Tekkyuu Fight! The Great Battle Gaiden (Apr 12, 1993 prototype) | | Game Boy |
| Tempest (Jan 5, 1984 prototype) | | Atari 2600 |
| Tempo Jr. (Dec 12, 1994 prototype) | | Game Gear |
| Tempo Jr. (Dec 26, 1994 prototype) | | Game Gear |
| Tempo Jr. (Dec 5, 1994 prototype) | | Game Gear |
| Tempo Jr. (Feb 15, 1995 prototype) | | Game Gear |
| Tempo Jr. (Feb 6, 1995 prototype) | | Game Gear |
| Tempo Jr. (Jan 17, 1995 prototype) | | Game Gear |
| Tempo Jr. (Jan 20, 1995 prototype) | | Game Gear |
| Tempo Jr. (Jan 31, 1995 prototype) | | Game Gear |
| Tempo Jr. (Nov 28, 1994 prototype) | | Game Gear |
| Tengen Tetris (Prototype A) | | NES |
| Tengen Tetris (Prototype B) | | NES |
| Tengen Tetris (Prototype C) | | NES |
| Tengen Tetris (Prototype D) | | NES |
| Tengen World Cup Soccer (Prototype) | | Game Gear |
| Terminator 2: Judgment Day (Jul 16, 1991 prototype) | | NES |
| Terra Cresta (Dec 28, 1987 prototype) | | NES |
| Terrorballs (Amstrad CPC prototype) | | Amstrad CPC |
| Tesserae (Game Gear prototype) | | Game Gear |
| Tesserae (Prototype) | | Game Boy |
| Tetris (Jun 14, 1989 prototype) | | Game Boy |
| The Addams Family: Pugsley's Scavenger Hunt (Apr 22, 1993 prototype) | | Game Boy |
| The Addams Family: Pugsley's Scavenger Hunt (Game Boy prototype) | | Game Boy |
| The Addams Family: Pugsley's Scavenger Hunt (Jan 21, 1993 NTSC prototype) | | NES |
| The Addams Family: Pugsley's Scavenger Hunt (Jan 21, 1993 PAL prototype) | | NES |
| The Addams Family: Pugsley's Scavenger Hunt (Jan 25, 1993 prototype) | | NES |
| The Addams Family: Pugsley's Scavenger Hunt (Jan 28, 1993 NTSC prototype) | | NES |
| The Addams Family: Pugsley's Scavenger Hunt (Jan 28, 1993 PAL prototype) | | NES |
| The Addams Family: Pugsley's Scavenger Hunt (Jul 13, 1993 prototype) | | NES |
| The Addams Family: Pugsley's Scavenger Hunt (May 14, 1993 Prototype) | | NES |
| The Addams Family: Pugsley's Scavenger Hunt (NES Prototype) | | NES |
| The Adventures of Batman & Robin (Apr 27, 1995 prototype) | | Game Gear |
| The Adventures of Batman & Robin (Apr 29, 1995 prototype A) | | Game Gear |
| The Adventures of Batman & Robin (Apr 30, 1995 prototype) | | Game Gear |
| The Adventures of Batman & Robin (May 2, 1995 prototype) | | Game Gear |
| The Adventures of Batman & Robin (May 4, 1995 prototype) | | Game Gear |
| The Adventures of Batman & Robin (May 6, 1995 prototype B) | | Game Gear |
| The Adventures of Batman & Robin (May 6, 1995 prototype) | | Game Gear |
| The Adventures of Batman & Robin (May 7, 1995 prototype) | | Game Gear |
| The Adventures of Rocky and Bullwinkle (Game Boy prototype) | | Game Boy |
| The Bard's Tale: Tales of the Unknown (Japanese prototype) | | NES |
| The Bard's Tale: Tales of the Unknown (USA prototype A) | | NES |
| The Bard's Tale: Tales of the Unknown (USA prototype B) | | NES |
| The Blues Brothers (Game Boy Prototype) | | Game Boy |
| The Blues Brothers (Prototype) | | NES |
| The Bugs Bunny Crazy Castle (Prototype) | | NES |
| The California Raisins: The Grape Escape (Prototype A) | | NES |
| The California Raisins: The Grape Escape (Prototype B) | | NES |
| The Chessmaster (prototype) | | Game Boy |
| The Fantastic Adventures of Dizzy (Prototype) | | NES |
| The Flintstones: BurgerTime in Bedrock (Prototype) | | Game Boy Color |
| The Goonies II (Prototype) | | NES |
| The Guardians: Storm Over Doria (Prototype A) | | Atari Lynx |
| The Guardians: Storm Over Doria (Prototype B) | | Atari Lynx |
| The Immortal (Jun 28, 1990 prototype) | | NES |
| The Jetsons: Cogswell's Caper (Prototype) | | NES |
| The King of Fighters R-2 (Taikenban) | | Neo Geo Pocket Color |
| The Last Starfighter (prototype) | | Atari 2600 |
| The Lawnmower Man (Oct 11, 1993 prototype) | | Game Boy |
| The Legend of Robin Hood (Prototype) | | NES |
| The Lion King (Aug 11, 1994 prototype) | | Game Gear |
| The Lion King (Aug 12, 1994 prototype) | | Game Gear |
| The Lion King (Aug 13, 1994 prototype) | | Game Gear |
| The Lion King (Aug 14, 1994 prototype) | | Game Gear |
| The Lion King (Aug 16, 1994 prototype) | | Game Gear |
| The Lion King (Aug 17, 1994 prototype 2) | | Game Gear |
| The Lion King (Aug 17, 1994 prototype) | | Game Gear |
| The Lion King (Aug 20, 1994 prototype) | | Game Gear |
| The Lion King (Aug 24, 1994 prototype) | | Game Gear |
| The Lion King (Aug 3, 1994 prototype) | | Game Gear |
| The Lion King (Jul 13, 1994 prototype) | | Game Boy |
| The Lion King (Mar 7, 1994 NES prototype) | | NES |
| The Lion King (Mar 7, 1994 prototype) | | Game Boy |
| The Lion King (May 25, 1994 prototype) | | Game Gear |
| The Lion King (May 9, 1994 prototype) | | NES |
| The Lion King (Oct 12, 1994 prototype) | | Game Boy |
| The Lion King (Oct 7, 1994 prototype) | | Game Boy |
| The Little Mermaid (Japanese prototype) | | NES |
| The Little Mermaid (Spanish Game Boy prototype) | | Game Boy |
| The Little Mermaid II: Pinball Frenzy (PAL rumble Prototype) | | Game Boy Color |
| The Lone Ranger (Jan 30, 1991 prototype) | | NES |
| The Rescue of Princess Blobette (Sep 26, 1990 prototype) | | Game Boy |
| The Simpsons: Bart vs. the Space Mutants (Prototype) | | NES |
| The Simpsons: Bartman Meets Radioactive Man (Prototype) | | NES |
| The Smurfs (Prototype) | | NES |
| The Sword of Hope (Prototype) | | Game Boy |
| The Sword of Hope II (Prototype) | | Game Boy |
| The Texas Chainsaw Massacre (prototype) | | Atari 2600 |
| The Three Stooges (Feb 23, 1989 prototype) | | NES |
| The Tower of Radia (US prototype) | | NES |
| The Trolls in Crazyland (Jul 9, 1992 prototype) | | NES |
| The Wing of Madoola (prototype) | | NES |
| The World of Sport: Golf (Feb 25, 1993 prototype) | | Game Gear |
| Thomas the Tank Engine & Friends (NES Prototype) | | NES |
| Thomas the Tank Engine 2: The Race (Amstrad CPC prototype) | | Amstrad CPC |
| Threshold (prototype) | | Atari 2600 |
| Thunder & Lightning (Prototype) | | NES |
| Time Diver: Eon Man (Prototype) | | NES |
| TinTin au Tibet (Prototype) | | Game Boy Color |
| Tintin: Prisoners of the Sun (Prototype) | | Game Boy |
| Tintin: Temple du Soleil (Prototype) | | Game Boy Color |
| Tiny Toon Adventures: Babs' Big Break (Jul 16, 1991 prototype) | | Game Boy |
| Tiny Toon Adventures: Babs' Big Break (Sep 6, 1991 prototype) | | Game Boy |
| Tip Off (Dec 10, 1992 prototype) | | Game Boy |
| Tip Off (Feb 22, 1994 prototype) | | Game Boy |
| Tip Off (Game Boy prototype A) | | Game Boy |
| Tip Off (Game Boy prototype B) | | Game Boy |
| Tip Off (NES prototype - Music) | | NES |
| Tip Off (NES prototype) | | NES |
| Tip Off (Nov 10, 1992 prototype) | | Game Boy |
| Titan Warriors (Prototype B) | | NES |
| Titan Warriors (Prototype) | | NES |
| Toki (prototype) | | NES |
| Tom and Jerry: Frantic Antics! (Prototype) | | Game Boy |
| Tomb Raider (Game Boy Color prototype) | | Game Boy Color |
| Tonka Construction Site (Jan 17, 2002 prototype) | | Game Boy Color |
| Tootuff (Prototype) | | Game Boy Color |
| Towers II: Plight of the Stargazer (Dec 9, 2001 prototype) | | Game Boy Color |
| Towers II: Plight of the Stargazer (Lot Check prototype) | | Game Boy Color |
| Track Meet (prototype) | | Game Boy |
| Trax (prototype) | | Game Boy |
| Triumph (Prototype) | | Game Boy |
| Trog (Apr 23, 1991 prototype) | | NES |
| Trog (prototype) | | NES |
| Trolls on Treasure Island (May 26, 1992 prototype) | | NES |
| Trolls on Treasure Island (Prototype) | | NES |
| Trouballs (Apr 2, 2000 prototype) | | Game Boy Color |
| Tuna Technologies Race Engine (Jan 20, 2000 tech demo) | | Game Boy Color |
| Tuna Technologies Race Engine (Nov 14, 1999 tech demo) | | Game Boy Color |
| Tuna Technologies Race Engine (Nov 15, 1999 tech demo) | | Game Boy Color |
| Turbo (prototype) | | Atari 2600 |
| Turok 2: Seeds of Evil (Prototype) | | Game Boy Color |
| TwinBee 3: Poko Poko Dai Maou (Prototype) | | NES |
| Tyrannosaurus Tex (Mar 21, 2000 prototype) | | Game Boy Color |
| Tyrian 2000 (Game Boy Color prototype) | | Game Boy Color |
| UEFA 2000 (Prototype) | | Game Boy Color |
| US Championship V'Ball (Prototype) | | NES |
| UWC (Prototype) | | NES |
| Ufouria: The Saga (Early prototype) | | NES |
| Ufouria: The Saga (US prototype) | | NES |
| Ultimate Air Combat (Aug 14, 1991 prototype) | | NES |
| Ultimate Air Combat (Prototype) | | NES |
| Ultra Golf (Nov 20, 1991 prototype) | | Game Boy |
| Uninvited (Aug 23, 1990 prototype) | | NES |
| Uninvited (Aug 30, 1990 prototype) | | NES |
| Uninvited (Jul 4, 1990 prototype) | | NES |
| Uninvited (Sep 10, 1990 prototype) | | NES |
| Unknown (NES CHR prototype) | | NES |
| Unknown (Oct 22, 1982 prototype) | | Atari 2600 |
| Unknown (Oct 29, 1982 prototype) | | Atari 2600 |
| Unpredictaball (Prototype) | | Amstrad CPC |
| Urusei Yatsura: Lum no Wedding Bell (prototype) | | NES |
| VR Sports: Powerboat Racing (Game Boy Color prototype) | | Game Boy Color |
| Venetian Blinds (Tech Demo) | | Atari 2600 |
| Venice Beach Volleyball (prototype) | | NES |
| Vice: Project Doom (Prototype) | | NES |
| Vindicators (Atari Lynx prototype) | | Atari Lynx |
| Virus (1989 Prototype) | | NES |
| Virus (Feb 2, 1990 prototype) | | NES |
| Virus (PlayChoice-10 prototype) | | NES |
| WDL: World Destruction League - Thunder Tanks (Prototype) | | Game Boy Color |
| WWF Wrestlemania: Steel Cage Challenge (Prototype) | | NES |
| Wally Bear and the No! Gang (Prototype) | | NES |
| War on Wheels (Nov 27, 1990 prototype) | | NES |
| War on Wheels (Prototype) | | NES |
| Wario's Woods (prototype) | | NES |
| Watashi no Restaurant (prototype 1) | | Game Boy Color |
| Watashi no Restaurant (prototype 2) | | Game Boy Color |
| Watashi no Restaurant (prototype 3) | | Game Boy Color |
| Wendy: Der Traum von Arizona (Nov 4, 2002 prototype) | | Game Boy Color |
| Wheel of Fortune Featuring Vanna White (Prototype) | | NES |
| Whomp 'Em (Prototype) | | NES |
| WildSnake (Game Gear Prototype) | | Game Gear |
| Wily & Right no RockBoard: That’s Paradise (Game Boy prototype) | | Game Boy |
| Wily & Right no RockBoard: That’s Paradise (prototype) | | NES |
| Wizard of Wor (prototype) | | Atari 2600 |
| Wizardry: Knight of Diamonds - The Second Scenario (prototype) | | NES |
| Wolfman (Mar 19, 1992 prototype) | | Atari Lynx |
| Wonder Boy (Game Gear prototype) | | Game Gear |
| Wonder Boy III: The Dragon's Trap (Prototype) | | Game Gear |
| Wordtris (prototype) | | Game Boy |
| Workboy (prototype) | | Game Boy |
| World Beach Volley: 1992 GB Cup (Prototype) | | Game Boy |
| World Series Baseball '95 (Aug 2, 1994 prototype) | | Game Gear |
| World Series Baseball '95 (Jul 19, 1994 prototype) | | Game Gear |
| World Series Baseball '95 (Jul 22, 1994 prototype) | | Game Gear |
| World Series Baseball '95 (Jul 28, 1994 prototype) | | Game Gear |
| World Series Baseball '95 (Jul 29, 1994 prototype) | | Game Gear |
| World Series Baseball '95 (Jul 9, 1994 prototype) | | Game Gear |
| World Series Baseball '95 (Jun 29, 1994 prototype) | | Game Gear |
| Worms Armageddon (Game Boy Color prototype) | | Game Boy Color |
| X (Gameboy Tech Demo) | | Game Boy |
| X-Men - Gamemaster's Legacy (Aug 10, 1994 prototype) | | Game Gear |
| X-Men - Gamemaster's Legacy (Aug 31, 1994 prototype) | | Game Gear |
| X-Men - Gamemaster's Legacy (Sep 6, 1994 prototype C) | | Game Gear |
| X-Men - Gamemaster's Legacy (Sep 6, 1994 prototype) | | Game Gear |
| X-Men - Mojo World (Jul 5, 1996 prototype) | | Game Gear |
| X-Men - Mojo World (Jun 13, 1996 prototype) | | Game Gear |
| X-Men - Mojo World (Jun 24, 1996 prototype) | | Game Gear |
| X-Men - Mojo World (Jun 25, 1996 prototype) | | Game Gear |
| X-Men - Mojo World (Jun 27, 1996 prototype) | | Game Gear |
| X-Men - Mojo World (Jun 28, 1996 prototype) | | Game Gear |
| X-Men - Mojo World (Jun 29, 1996 prototype) | | Game Gear |
| X-Men - Mojo World (Jun 5, 1996 prototype) | | Game Gear |
| Xevious (Aug 2, 1983 prototype) | | Atari 2600 |
| Xevious (Jan 18, 1984 prototype) | | Atari 2600 |
| Xevious (May 25, 1983 prototype) | | Atari 2600 |
| Xybots (NES Prototype) | | NES |
| Yo! Noid (Jul 12, 1990 prototype) | | NES |
| Yogi Bear in Yogi Bear's Goldrush (Prototype) | | Game Gear |
| Yoshi's Cookie (Nov 21, 1992 build) | | Game Boy |
| Yu-Gi-Oh! Dark Duel Stories (French prototype) | | Game Boy Color |
| Yu-Gi-Oh! Dark Duel Stories (Jun 14, 2002 prototype) | | Game Boy Color |
| Zelda no Densetsu: The Hyrule Fantasy (Prototype) | | FDS |
| Zidane: Football Generation (prototype) | | Game Boy Color |
| Zombie Nation (Prototype) | | NES |
| Zoop (Aug 11, 1995 Prototype) | | Game Gear |
| Zoop (Game Boy prototype) | | Game Boy |
| Zunou Senkan Galg (prototype) | | NES |