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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 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

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

• News/Beavis and Butt-Head Do Hollywood by Sazpaimon
• Spider-Man (New Level Soft) (July 27, 1998 prototype) by Sazpaimon
• Spider-Man (New Level Soft) (Oct 8, 1998 prototype) by Sazpaimon
• Beavis and Butt-Head Do Hollywood (Sep 2, 1998 prototype) by Sazpaimon
• Beavis and Butt-Head Do Hollywood (Nov 10, 1998 prototype) by Sazpaimon
• Beavis and Butt-Head Do Hollywood (Nov 1, 1998 prototype) by Sazpaimon
• Beavis and Butt-Head Do Hollywood (Mar 4, 1998 prototype) by Sazpaimon
• Grand Theft Auto IV (Jan 30, 2009 Patch Data prototype) by Funtimeandrefoxy
• Exerion (PAL prototype) by Ndiddy
• And Yet It Moves (Build 1.04) by MattTheCatt
(more)

Top contributors

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Latest news

Superman: Battle for Metropolis (Jan 12, 2001 prototype)
Discuss this release on our Discord server!

Hello again. This time we have another unreleased game to share with you - Superman: Battle for Metropolis for the Nintendo Game Boy Color!

Developed by Neon Studios and slated to be published by InfoGrames, this game was canceled after failing to impress the license holder for Superman. Regulations that were imposed on the character prohibited the developers from making the game they wanted, and so this prototype was created as a compromise to meet some of the demands of the licensor. The game remained relatively unheard of, as it doesn't seem like the game was ever mentioned in the media or present at any tradeshow at any time during its development. The game was presumably canceled around the time that this specific build was created and possibly never had an opportunity to see the light of day in any form. This prototype was donated to us anonymously and will be the first time this game has ever been seen before.

We hope you enjoy this one and look forward to sharing more goodies tomorrow! Until next time.