- Oct 31, 2026: Happy Halloween 2026! A Journey Through STI's Early Years
- Feb 1, 2026: The Dead Are Rising
- Jan 24, 2026: Beavis and Butt-Head do Hollywood
- Jan 1, 2026: Year of Spore
- Dec 25, 2025: One Bad Ass Hedgehog - Shadow the Hedgehog
- Nov 26, 2025: A Mojave Thanksgiving - Fallout: New Vegas Prototype
- Oct 31, 2025: Happy Halloween 2025! Dark Empires Prototype & Craig Stitt Interview
- Jun 29, 2025: Animaniacs - Hollywood Hypnotics
- Feb 1, 2025: Frogger 2 Full Development Archive
- Jan 1, 2025: Happy NES Year
- Dec 26, 2024: NESMas - Day 2
- Dec 25, 2024: NESMas - Day 1
- Jul 6, 2024: Vanished without a Trace - Out of the Vortex for the Sega Mega Drive
- Apr 9, 2024: Crash Tag Team Racing (Xbox Prototype)
- Jan 21, 2024: Crash Bash and Spyro 3
- (earlier news)
Main Page
The Hidden Palace is a community dedicated to the preservation of video game development media (such as prototypes, hardware, source code, artwork, and more). This website can be utilized as a catalog for the items that we and others are able to collect and share.
If you are interested in contributing, please see our How to Contribute page.
- Nov 11, 2026: BandFuse: Rock Legends (Oct 25, 2013 prototype) by Gonzo
- Nov 11, 2026: BandFuse: Rock Legends (Oct 24, 2013 prototype) by Gonzo
- Nov 11, 2026: BandFuse: Rock Legends (Jul 2, 2013 prototype) by Gonzo
- Nov 11, 2026: BandFuse: Rock Legends (Jun 27, 2013 prototype) by Gonzo
- Nov 10, 2026: Halo Wars (Dec 16, 2008 prototype) by Gonzo, Not over
- Nov 10, 2026: Blazing Angels: Squadrons of WWII (Feb 6, 2006 prototype) by AMSNL
- Nov 09, 2026: Hitman: Blood Money (Feb 13, 2006 prototype) by AMSNL
- Nov 09, 2026: Tom Clancy's Splinter Cell: Double Agent (Jul 4, 2006 prototype) by AMSNL
- Nov 09, 2026: Tom Clancy's Splinter Cell: Double Agent (Jan 25, 2006 prototype) by AMSNL
- Nov 06, 2026: InVersion (Feb 19, 2012 prototype) by C5R35
- Nov 06, 2026: God Mode (May 16, 2012 prototype) by C5R35
- Nov 05, 2026: Pet Alien (prototype) by
- Nov 03, 2026: FIFA Soccer 2005 (Jul 5, 2004 prototype) by C5R35
- Oct 31, 2026: Kid Chameleon (Prototype B) by CartridgeCulture
- Oct 31, 2026: Jester (February 12, 1993 prototype) by CartridgeCulture
- Oct 31, 2026: Treasure Tails (April 6, 1993 prototype) by CartridgeCulture
- Oct 31, 2026: B-Bomb (October 2, 1992 prototype) by CartridgeCulture
- Oct 31, 2026: God Mode (Jul 6, 2012 prototype) by C5R35
- Oct 31, 2026: Segapede (January 25, 1994 prototype) by CartridgeCulture
- Oct 31, 2026: Little Monsters (March 19, 2009 prototype) by Gonzo (more)
Merry (S)NESMas! 🎄
For the first day of NESMas, Frank Cifaldi of the Video Game History Foundation brought us a lot of video game prototypes purchased from an estate sale of Steven McKay, who had once been the General Manager of Nintendo’s Mexico division.

The vast majority of the Nintendo prototypes were acquired by Josh Hamblin, who runs SideQuest Games and is one of the organizers for the Portland Retro Gaming Expo. Josh goes more into the back story in a Metal Jesus YouTube video:
Josh has graciously agreed to release the prototypes he acquired after having them graded. He submitted his prototypes to WATA, which provides a service to authenticate, grade, and encapsulate video games in a tamper-proof case. Grading services have been popular in other collecting hobbies, such as coins and cards. With video game collecting becoming more and more popular, grading has arrived to the video games.

Typically, collectors opt to grade rare retail video games, but WATA also offers this service for prototypes, and although it authenticates whether they are legitimate or not, they do not receive a specific grade out of 10. Prototypes, however, are pretty tough to authenticate, thus WATA has turned to Frank Cifaldi of the Video Game History Foundation, who is one of the foremost experts on prototype media, having been in the game for decades, and having handled untold numbers of prototypes himself.
A little known fact is that Frank stipulated that all of his prototype authentication research is eventually made public, which accomplishes a win-win between collectors and prototype enthusiasts. We’re happy to announce that in addition to today’s prototype release, we are also starting to document WATA metadata for their prototype submissions on the wiki.
This includes prototypes that have not had their ROMs releases! WATA does not release ROMs unless they receive explicit permission from the submitter. However, the metadata and authentication text will now be publicly available.
Here are the prototypes from the Josh Hamblin collection. Thanks again to Josh and the Frank Cifaldi for providing these for release!
- 1943: The Battle of Midway (Prototype B)
- 1943: The Battle of Midway (Prototype C)
- Addams Family (Prototype)
- Adventures of Rad Gravity (Prototype)
- Bases Loaded (Prototype C)
- Bionic Commando (Prototype)
- Bubsy II (Jul 12, 1994 prototype)
- D-Force (Prototype)
- Defenders of Dynatron City (Prototype)
- F-117A Stealth Fighter (Prototype)
- Fester's Quest (Prototype)
- Flight of the Intruder (Prototype)
- Galaxy 5000: Racing in the 51st Century (Prototype B)
- Gun.Smoke (Prototype)
- High Speed (Prototype)
- Hit the Ice (Game Boy prototype)
- Irem Skins Game (Prototype)
- King Arthur's World (Oct 21, 1992 prototype)
- Little Nemo (Prototype)
- Mickey's Ultimate Challenge (Aug 25, 1993 prototype)
- Shadowrun (Jan 5, 1993 prototype)
- Solomon's Key (Prototype)
- Super Bases Loaded (Prototype)
- Super Earth Defense Force (Prototype)
- Sword Master (prototype)
- Terra Cresta (Prototype)
- The Addams Family: Pugsley's Scavenger Hunt (SNES Prototype B)
- Ultimate Air Combat (Prototype B)
- Utopia: The Creation of a Nation (Prototype B)
- Where in Time is Carmen Sandiego (Prototype)
- Whomp 'Em (Prototype)
Josh Hamblin has also agreed to release two Sega Genesis prototypes in his collection that were not in the auction – Beyond Zero Tolerance and Dominus.
But that’s not all! Some of the prototypes were bought by Josh Byerly, who also gratiously offered to have his released!
But wait, there’s more gifts!
Finally, Frank himself bought a few of the auctioned prototypes and he is also releasing those today! This includes a US localization of Chester Field which has not been released until now, a more completed version of the unreleased game Titan Warriors (which is really fun and has an awesome sountrack by the way!), as well as a previously unreleased NTSC version of Trolls in Crazyland.
- Chester Field: Ankoku Shin heno Chousen (US prototype)
- Titan Warriors (Prototype B)
- Trolls in Crazyland (Prototype)
- Hatris (Prototype B)
Huge thanks to Josh Hamblin, Josh Byerly, 🎅 Frank Cifaldi for today’s presents!
(psst the VGHF takes donations!)
Stay tuned for tomorrow’s release for more NES goodies!
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- BandFuse: Rock Legends (Oct 25, 2013 prototype) by Gonzo
- BandFuse: Rock Legends (Oct 24, 2013 prototype) by Gonzo
- BandFuse: Rock Legends (Jul 2, 2013 prototype) by Gonzo
- BandFuse: Rock Legends (Jun 27, 2013 prototype) by Gonzo
- Halo Wars (Dec 16, 2008 prototype) by Gonzo
- Blazing Angels: Squadrons of WWII (Feb 6, 2006 prototype) by Dink
- Hitman: Blood Money (Feb 13, 2006 prototype) by Dink
- NiER:Automata (Jul 10, 2021 prototype) by Starfrost
- Tom Clancy's Splinter Cell: Double Agent (Jul 4, 2006 prototype) by Dink
- Tom Clancy's Splinter Cell: Double Agent (Jan 25, 2006 prototype) by Dink
- The Simpsons: Hit & Run (Sep 12, 2003 prototype) by Gonzo
- Escape From Playtime (prototype) by Kikodavid
- Assassin's Creed IV: Black Flag (Aug 23, 2013 prototype) by Funtimeandrefoxy
- InVersion (Feb 19, 2012 prototype) by C5R35
- Uncharted 3: Drake's Deception (Oct 4, 2011 Multiplayer prototype) by Funtimeandrefoxy (more)