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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.

Past news

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

Jan 1, 2024: New Years 2024 - Sonic Heroes

Dec 25, 2023: A Very Bandicoot Christmas - Crash Bandicoot: Warped Prototype

Nov 24, 2023: 6GUN: BattleBourne's Unreleased PlayStation 2 Game

Oct 31, 2023: Daredevil: The Man Without Fear - Unreleased PlayStation 2 Game

Feb 28, 2023: Phantasy Star Online Prototype

Feb 15, 2023: PSP Release Candidates

Dec 25, 2022: Project Deluge: Xbox 360 and Wii

Dec 9, 2022: Semradical!

Nov 24, 2022: Sega Technical Institute’s Cancelled Segapede

(earlier news)

Latest contributed articles

• Monday Night Combat (Sep 1, 2010 B prototype) by Funtimeandrefoxy
• BIT.TRIP Presents: Runner2: Future Legend of Rhythm Alien (Kiosk demo) by Funtimeandrefoxy
• UFC Undisputed 3 (Dec 14, 2011 prototype) by Funtimeandrefoxy
• Shaun White Snowboarding (Nov 21, 2008 DLC The Glamour Pack prototype) by Funtimeandrefoxy
• Hungry Dinosaurs (prototype) by Tikal.
• Mirror's Edge (Dec 16, 2008 DLC Pure Time Trials prototype) by Funtimeandrefoxy
• Rapala Tournament Fishing! (DLC New Gameplay Level prototype) by Funtimeandrefoxy
• NCAA Basketball 09 (Feb 7, 2009 prototype) by Funtimeandrefoxy
• NCAA Basketball 09 (Mar 16, 2009 DLC Madness Edition Bracket Pack prototype) by Funtimeandrefoxy
• NCAA Basketball 09 (Feb 10, 2009 DLC Test prototype) by Funtimeandrefoxy
(more)

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Latest forum topics

Latest news

Super Star Wars: Return of the Jedi (Prototype)
Star Trek: Deep Space Nine – Crossroads of Time (Jul 3, 1995 prototype)
Prince of Persia (Altered build)
Splitz (Altered build)
Felix the Cat (Prototype)
Super Off Road (Game Boy Prototype)
Discuss this release on the boards here!

We have some new prototypes to show you today courtesy of Radar (as part of his collection) and DillyDylan!

Super Star Wars: Return of the Jedi (Prototype)

First up we have a nice early prototype of Super Star Wars: Return of the Jedi for the SNES! This prototype is very unfinished. It includes alternate level/object layouts, different graphics, some debugging features and more. You can play any level in this prototype by pressing L+R on the second controller.

Star Trek: Deep Space Nine – Crossroads of Time (Jul 3, 1995 prototype)

Next we have a relatively late prototype of Star Trek: Deep Space Nine - Crossroads of Time for the SNES. This prototype is later than the previously released prototype, but still has it’s share of differences in comparison to the final version. This prototype has an active debugger enabled, and a level select can be accessed from the options menu on the title screen.

DillyDylan was also kind enough as to donate a few prototypes for us to add today as well!

Prince of Persia (Altered build)

First, a weird oddity. This build almost matches the final European version but there is an additional programming credit for “Matt Fro” which was removed in the final EU ROM.

Splitz (Altered build)

Another weird oddity. This build also matches it’s final equivalent, but as you can see, it’s actually twice the size in comparison. So what gives? The ROM header was modified to include a new checksum and to note that the ROM is 128kb in size, so it’s not technically an overdump. The last 64kb of the ROM actually belongs to the Game Boy port of Populous, but either or not the version is based on final code or if it’s a prototype is unknown as the data looks fragmented.

Felix the Cat (Prototype)
Here’s the first of the prototypes, a prototype of Felix the Cat for the Game Boy. For some reason, the prototype lacks a correct header so the game might be unplayable on most emulators. The ROM is playable in BGB however, so we recommend playing the ROM with this instead.

Super Off Road (Game Boy Prototype)
And last, we have a prototype of Super Off Road for the Game Boy (there sure are a lot of prototypes for this game aren’t there?). Just like Felix, this ROM doesn’t work properly in most emulators but it does work in BGB, which is one of the most accurate Game Boy (Color) emulators out there. So again, we recommend playing this prototype in this emulator instead.

That’s all for now! Stay tuned for some more prototype goodness soon.

Until next time!

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