- 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.
- 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
- Sega Multimedia Studio: Sega CD Demo (May 9, 1992 prototype) by MDTravis
- Sega Multimedia Studio: Rave CD (Jun 3, 1993 prototype B) by MDTravis (more)
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Putty Squad (Early prototype)
Dune II: The Battle for Arrakis (Jan 11, 1994 prototype)
Champions World Class Soccer (Mar 18, 1994 prototype)
Radical Rex (Prototype)
Street Racer (Mar 21, 1995 prototype)
Discuss this release on our Discord server!
Hello once again. We're back with even more goodies for the Sega Mega Drive, straight from the big man himself.
First up, we have an extremely early prototype of the canceled port of the game Putty Squad, which was originally in development for the Amiga 1200 but only came out on the SNES in the end during its time. Next we have a late prototype of Dune II: The Battle for Arrakis straight from a bunch of unmarked EPROMs. Next we have a nice prototype of Champions World Class Soccer that contains many differences in comparison to the final build. We also have a somewhat late prototype of Radical Rex for the Mega Drive as well, containing mostly code differences. Finally, we have a build of Street Racer for the Mega Drive that matches the final build but with an altered/watermarked header.
Stay tuned for tomorrow for some more goodies! Until next time, see ya!
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