- 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.
- Sep 24, 2026: Dishonored (Aug 7, 2012 prototype) by Witch
- Sep 24, 2026: Rise of the Guardians: The Video Game (Oct 19, 2012 prototype) by James2452
- Sep 22, 2026: Norse by Norsewest: The Return of the Lost Vikings (Feb 25, 1997 prototype) by AMSNL
- Sep 21, 2026: NFL Fever 2003 (Jun 24, 2002 prototype) by AMSNL
- Sep 19, 2026: SEGA Mega-CD Bios (Hoshino Special) (sample) by Gageiro
- Sep 18, 2026: Grand Theft Auto V (Oct 13, 2014 prototype) by
- Sep 18, 2026: Dr. Robotnik's Mean Bean Machine (Kraftwerk prototype) by CartridgeCulture
- Sep 17, 2026: DJ GEMS Demo (prototype) by CartridgeCulture
- Sep 16, 2026: Sega Multimedia Studio: Rave CD (Jun 3, 1993 prototype B) by CartridgeCulture
- Sep 16, 2026: Sega Multimedia Studio: Rave CD (Jun 3, 1993 prototype A) by CartridgeCulture
- Sep 16, 2026: Sonic the Hedgehog CD (Aug 4, 1993 prototype) by CartridgeCulture
- Sep 16, 2026: Jurassic Park (Jan 26, 1994 prototype) by CartridgeCulture
- Sep 16, 2026: Jurassic Park (Nov 18, 1993 prototype) by CartridgeCulture
- Sep 16, 2026: Sewer Shark (Jun 20, 1993 prototype) by CartridgeCulture
- Sep 16, 2026: Prize Fighter (Nov 18, 1993 prototype) by CartridgeCulture
- Sep 16, 2026: Dracula Unleashed (Nov 8, 1993 prototype) by CartridgeCulture
- Sep 16, 2026: Ports of Call: XXL (Oct 9, 2003 prototype) by AMSNL
- Sep 16, 2026: Burnout 3: Takedown (Jul 28, 2004 prototype) by MattKC
- Sep 16, 2026: Sega Multimedia Studio: Sega CD Demo (May 9, 1992 prototype) by CartridgeCulture
- Sep 15, 2026: Star Trek: Deep Space Nine: Crossroads of Time (Dec 1994 prototype) by CartridgeCulture (more)
Happy NES Year!
Today we bring you the prototype collection of Armageddon Potato, owner of the Armageddon Potato Games store in Sacremento, California. He has been a long time member of the Nintendo collecting community, going back to early NintendoAge days.
He has amassed quite a collection of prototypes for various consoles, focusing mainly on Nintendo and he has graciously offered to dump his prototype collection for release. Although some of them have turned out to be final builds, there are quite a few fresh prototypes.
If you would like to support AP, check out his Instagram @armageddonpotatogames and X @ArmageddonPotato.
Here it is!
But wait, there's more!
As a bonus, Frank Cifaldi offered a prototype of the previously unseen Scanner.
And as a double bonus, the folks at Codebound also added the source code to Lion King for NES and Game Boy, as well as a few Lion King builds for the Game Boy.
- The Lion King (Mar 7, 1994 prototype)
- The Lion King (Jul 13, 1994 prototype)
- The Lion King (Oct 7, 1994 prototype)
- The Lion King (Oct 12, 1994 prototype)
- The Lion King (Game Boy and NES source code)
Enjoy!
Thank you to Armageddon Potato for the big release! As well as Frank Cifaldi and Codebound for contributing the bonus items for NES day. Thanks to togemet2 and iniche for help with the release.

Until next time!
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- Dishonored (Aug 7, 2012 prototype) by Gonzo
- Rise of the Guardians: The Video Game (Oct 19, 2012 prototype) by Funtimeandrefoxy
- 1 vs. 100 (Feb 25, 2009 prototype) by Revurt
- DON (Mar 9, 2012 prototype) by AubreyUnseen
- Garfield Fur Tech Demo (prototype) by AubreyUnseen
- Norse by Norsewest: The Return of the Lost Vikings (Feb 25, 1997 prototype) by Dink
- NFL Fever 2003 (Jun 24, 2002 prototype) by Dink
- SEGA Mega-CD Bios (Hoshino Special) (sample) by Gageiro
- Streets of Rage II (Preview) by Divingkataetheweirdo
- Grand Theft Auto V (Oct 13, 2014 prototype) by Gonzo
- Watch Dogs (Mar 28, 2014 prototype) by Reverb3252
- Dr. Robotnik's Mean Bean Machine (Kraftwerk prototype) by MDTravis
- Left 4 Dead 2 ( November 4, 2009 demo) by UNKNOWNED
- Left 4 Dead (November 12, 2008 demo) by UNKNOWNED
- DJ GEMS Demo (prototype) by MDTravis (more)