After much research and testing, the Project Deluge website released a series of prototypes on the internet for Sega Dreamcast and the first Xbox, 135 and 349 respectively. The pack includes a little bit of everything from games that are almost ready but never released, to very immature builds of deleted games in development.
Speaking of Sega Dreamcast, nearly complete games are few, but some prototypes are particularly interesting, such as Ready 2 Rumble Boxing Round 2, San Francisco Rush 2049, Shadow Man, Test Drive Cycles, Vigilante 8: Second Offense, WWF Attitude and Tony Hawk’s Skater professional. Also on the list is a localized version of Shanghai Dynasty, a title that was supposed to be released in the West by Activision but was canceled.
the package of Xbox is much richer, with titles like American Idol, Hail to the Chimp, He-Man: Defender of Grayskull and Pac-Man World Rally. There are also titles translated from Japanese and never released, such as Dinosaur Hunting: Ushinawareta Daichi. There are also many Sega prototypes, including Crazy Taxi 3: High Roller, ToeJam & Earl III, Jet Set Radio Future, Sega GT and Gun Valkyrie.
Project Deluge is a Hidden Place community project that is specifically concerned with collecting, preserving and publishing deleted video game projects, for any platform. If you are one of those nostalgics you can check this link.