- 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)
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Revision as of 00:35, February 16, 2023
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.
Adventures to Go! (Jun 12, 2009 prototype)
Atari Classics Evolved (Oct 1, 2007 prototype)
Crash: Mind over Mutant (Sep 7, 2008 prototype)
Disgaea Infinite (Mar 17, 2010 prototype)
Dungeon Maker: Hunting Ground (May 9, 2007 prototype)
Hammerin' Hero (Nov 28, 2008 prototype)
Holy Invasion Of Privacy, Badman! What Did I Do To Deserve This? (May 11, 2009 prototype)
Mana Khemia: Student Alliance (Dec 9, 2008 prototype)
Metal Slug XX (Sep 26, 2009 prototype)
Monster Hunter Freedom Unite (Jan 29, 2009 prototype)
BlazBlue: Continuum Shift II (Feb 28, 2011 prototype)
Warriors Orochi 2 (May 7, 2009 prototype)
Discuss this release on our Discord server!
Hello everyone! Sorry to keep you waiting since the holidays!
We have a few things cooked up for you in the not-so-distant future, but for now, we’d like to share something that will tide you over. We have a few “release candidate” PSP prototypes, builds that are near final but didn’t pass initial certification and needed a second version before being published. These prototypes were brought to you by Jehuty who had a treasure trove of almost 100 UMDs!
The games featured in this lot are all the ones that are confirmed to be different from anything released. These were verified using the same technology that helped us with Deluge, so we could confirm that these were all unique builds compared to the Redump set as of writing. The UMDs were dumped by site administrator Sazpaimon using PSP Filer v6.6 on the original hardware.
- Funtimeandrefoxy: 24,039 edits, 11149 articles
- Lemurboy12: 12,150 edits, 5369 articles
- Tikal.: 7,787 edits, 4318 articles
- Dink: 3,937 edits, 2783 articles
- Gonzo: 2,862 edits, 1340 articles
- Chagosan: 1,996 edits, 933 articles
- Missile: 1,946 edits, 968 articles
- Czykago: 1,751 edits, 547 articles
- Lilithdesign388: 1,410 edits, 383 articles
- Glitchmaster: 1,376 edits, 886 articles
- PopuriAO29: 1,120 edits, 9 articles
- Слава України: 1,016 edits, 368 articles
- Starfrost: 1,008 edits, 428 articles
- UNKNOWNED: 810 edits, 236 articles (more)
- 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
- Sega Multimedia Studio: Rave CD (Jun 3, 1993 prototype A) by MDTravis
- Sonic the Hedgehog CD (Aug 4, 1993 prototype) by MDTravis
- Jurassic Park (Jan 26, 1994 prototype) by MDTravis
- Jurassic Park (Nov 18, 1993 prototype) by MDTravis
- Sewer Shark (Jun 20, 1993 prototype) by MDTravis (more)
