I have created a topic in our forum where I’m going to put stuff (images, videos) that I think that are beta, but I’m not sure! But maybe you remember those games better than me, so check them out and try to help me, please! :)
Mr. Nutz 2? It looks like it was real
Madou at the DigitalPress forum seems to have found some graphical proof of the existence of Mr. Nutz 2, an old unreleased platform for the Sega Genesis / Mega Drive. There were some discussion about the state of the game, but if these screens are real, then it looks like it was really in development somehow:
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You can read more about it at the DP Forum
Videos:
Sonic’s Edusoft: Leaked!
It looks like that at Sonic Retro they have found a playable proto of Sonic’s Edusoft, a cancelled sonic game for the Sega Master System: “Sonic’s Edusoft is an unreleased educational game for the Sega Master System developed in 1991 by Tiertex. The unofficially licensed game had been unknown until a Wikipedia page was created in September 2006 by an anonymous programmer involved with the game. This page has since been removed from Wikipedia. In March 2007, “the programmer” replied to an SMS Power topic concerning the Wikipedia page, revealing more details about the game. On April 27th, 2008 the ROM was finally brought to the attention of the Sonic Retro community.”
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You can read more and download the proto @ Sonic Retro’s website
Lots of debug in those rooms
Our friend Randy355 has started a topic in the U64 forum where to collect various infos / images / videos for debug rooms that are still accessible in released games, here are some of them!
Donkey Kong 64 Debug Room:
Jet Force Gemini Debug Room:
Lost Zelda OOT Debug Room:
Mother 3 Debug Room:
Sonic Adventure 2 Debug Room:
Final Fantasy VIII Debug Room
Final Fantasy X-2 Debug Room
If you want to help the collection, you can read the discussion and add more debug rooms in his topic: Video Game Beta Rooms
Fear Effect Inferno Videos

Recently someone has begin to upload cutscene of Fear Effect Inferno, the cancelled sequel of Eidos’ franchise.
http://it.youtube.com/user/tMorishima
