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Release in progress!
We are working to add the NES year release to the site, stay tuned! (might take a couple hours)

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.

Hidden Palace news
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
Nov 23, 2022: Sonic 3 and Feel Preproduction VHS Tapes!
Oct 31, 2022: Happy Halloween 2022! Castlevania: Symphony of the Night for the Tiger Game.com!
Jan 1, 2022: New Years 2022!
Nov 13, 2021: Go Go Goemon! Mystical Ninja Goemon Zero
Oct 10, 2021: Mortal Kombat prototype for the Sega Mega Drive
Sep 18, 2021: Project Deluge: Xbox and Dreamcast
Jul 24, 2021: Angels with Burning Hearts: Burning Rangers Prototype
May 1, 2021: Crash Landing
Apr 17, 2021: Project Deluge: PlayStation 1, Saturn, and CD-I (Part 2)
Mar 20, 2021: Project Deluge: PlayStation 2
Jan 1, 2021: Dreams Come True: Sonic 1 (MD) Prototype
(earlier news)
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Merry NESMas!

For the second day of NESMas, we bring you a collection of prototypes amassed by the Nolan Brothers.

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  • Mrmark-battletoads.png
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  • Mrmark-caveman-ninja.png
  • Mrmark-f15-strike-eagle.png

Twin brothers Mark "MrMark0673" and Matt "BeaglePuss" Nolan were mainstays in the online collecting world through much of the 2000s. If you spent any time on the NintendoAge forums, these names are surely familiar to you. They quickly made a name for themselves in particular as collectors of prototype games, building up a sizable collection that included a number of unreleased games. Some games they acquired - Kitty's Catch and Hoppin' Mad, for example - were games that we didn't even know existed until the Nolans found them.

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  • Mrmark-golf-grand-slam.png
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  • Mrmark-low-g-man.png
  • Mrmark-mckids.png
  • Mrmark-mini-put.jpg
  • Mrmark-ninja-crusaders.png

The Nolans enjoyed contributing to fellow NES-playing hobbyists by making these games available, either as physical game cartridges they produced in small quantities or, in some cases, by simply releasing the ROM files online.


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  • Mrmark-supermariobros-duckhunt-trackmeet.png

The Nolans have mostly stepped away from game collecting today, but they were kind enough to pass along the majority of the ROM files they'd dumped over the years for the sake of historical preservation. While most of these are not completely new to the internet, one thing that is significant for me is that we can now validate clean, unmodified ROMs for unreleased games for the NES. These games were often modified slightly before being put on to physical cartridges, which might have led to some unintended consequences in altering game logic, so being able to provide "clean" copies means that these games are, finally, preserved.


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Here it is!

Nolan Brothers Lot

Thanks to Mark and Matt Nolan & Frank Cifaldi for the release as well as hwd45, togemet2 for help with the release!

Make sure you catch our NES Year stream on January 1st!

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