Developed by Loriciel, this game never saw the light of day due to licensing issues.
Famicom prototype Parody World: Monster has shown up on Ebay, and bidding has been furious.
Another day, another game prototype found. A work in progress version of Turok 3: Shadow of Oblivion (N64) has been found, and the owners over at Micro 64 have been kind enough to release a ROM dump of it.
A former Sega employee has unveiled an un-released Sega console; the Sega Pluto.
A beta version of the infamous Superman 64 has been released as a ROM.