Prototypes by system/NES

1943: The Battle of Midway (Prototype)

A Week of Garfield (prototype)

Adventure Island III (Prototype)

Adventures in the Magic Kingdom (Early prototype)

Adventures in the Magic Kingdom (Prototype)

Atlantis no Nazo (Prototype)

Banana (Jun 30, 1986 prototype)

Batman (Later Prototype)

Batman (Older Beta)

Batman Returns (PAL prototype)

Batman: Return of the Joker (Prototype)

Blaster Master (May 20, 1988 prototype)

Block Out (Prototype)

Cadillac (sample)

Chester Field: Ankoku Shin heno Chousen (Prototype)

Chip 'N Dale: Rescue Rangers (Prototype)

Chuck Yeager's Fighter Combat (Prototype)

Columbus: Ougon no Yoake (Prototype)

Contra (Sample Prototype)

Contra (Test Prototype)

Densetsu no Kishi: Elrond (Prototype)

Dino Hockey (Prototype)

Double Dragon (NES prototype)

Double Dragon II: The Revenge (sample)

Double Dragon III: The Sacred Stones (Tradewest prototype)

Dr. Mario (Apr 27, 1990 prototype)

Dr. Mario (Prototype)

Drac's Night Out (Prototype)

Dreamworld Pogie (Prototype)

DuckTales 2 (PAL Prototype A)

DuckTales 2 (PAL Prototype B)

EarthBound (prototype)

F-1 Race (Prototype)

Final Fantasy II (prototype)

Getsu Fuuma Den (prototype)

Ghostbusters (Prototype)

Gimmick! (Japan prototype)

Global Gladiators (Jul 9, 1993 prototype)

Global Gladiators (Jun 16, 1993 prototype)

Global Gladiators (Jun 30, 1993 prototype)

Global Gladiators (May 28, 1993 prototype - A)

Global Gladiators (May 28, 1993 prototype)

Happily Ever After (Prototype)

Hard Drivin' (Prototype)

Hatris (Prototype)

Hitler No Fukkatsu: Top Secret (prototype)

Ikinari Musician (Prototype)

King Neptune's Adventure (Prototype)

Little Mermaid: Ningyo Hime (Prototype)

Magician (Mar, 02 1990 prototype)

Mega Man 3 (prototype)

Meikyu Kumikyoku: Milon no Daiboken (Prototype)

Monster in My Pocket (Apr 22, 1991 prototype)

New Ghostbusters II (USA Prototype)

Ninja Gaiden (NES Prototype)

Ninja Gaiden II: The Dark Sword of Chaos (Jan 18, 1990 prototype)

Ninja Hattori-kun (prototype)

Ninja Jajamaru: Ginga Daisakusen (Prototype)

Parodius (PAL Prototype)

Parody World: Monster Party (Prototype)

Princess Tomato in the Salad Kingdom (Jun 30, 1990 prototype)

Probotector II: Return of the Evil Forces (Sample Prototype)

Puzzle (Prototype)

Rainbow Islands: The Story of Bubble Bobble 2 (Prototype)

Rampart (sample)

Robin Hood: Prince of Thieves (May 16, 1991 prototype)

Rockin Kats (Prototype)

SimCity (NES prototype)

Solomon's Key 2 (Fire 'n Ice prototype)

Spiritual Warfare (Prototype)

Square Deal (Prototype)

Star Force (Prototype)

Star Soldier (Prototype)

Strider Hiryu (Prototype)

Super C Prototype

Super Chinese 2: Dragon Kid (Prototype)

Super Mario Bros. 2 (prototype)

Superman (NES prototype)

Sweet Home (Prototype)

Taro's Quest (Prototype)

Tecmo Bowl (Oct 12, 1987 prototype)

Tecmo Super Bowl (Aug 27, 1991 prototype)

Teenage Mutant Ninja Turtles (Prototype)

The Bard's Tale: Tales of the Unknown (Prototype)

The California Raisins: The Grape Escape (Prototype A)

The California Raisins: The Grape Escape (Prototype B)

The Goonies II (Prototype)

The Three Stooges (Feb 23, 1989 prototype)

Thunder & Lightning (Prototype)

Toki (prototype)

TwinBee 3: Poko Poko Dai Maou (Prototype)

US Championship V'Ball (Prototype)

Ultimate Air Combat (Prototype)

Virus (1989 Prototype)

Virus (Feb 2, 1990 prototype)

Virus (PlayChoice-10 prototype)

War on Wheels (Prototype)

Yo! Noid (Prototype)