The full source for the above versions of Sonic Xtreme have finally leaked and been built. Only 5 games support the card - Virtua Fighter Remix, Battle Arena Toshinden, NASCAR, Panzer Dragoon, and a special version of Descent. The NV1 also includes Sega Saturn controller ports, and an audio processor making it an all-in-one card for playing Sega PC games. The NV1 is a 3D accelerator video card that, unlike modern video cards, rendered in Quads rather than 3-pointed polygons, much like the saturn. The heart of their initiative was a partnership with Nvidia to produce nvidia's first GPU, the NV1. until now.īack in 1995, Sega launched the Sega PC initiative, which would have coincided with Sonic Xtreme's development. Interestingly, the final video states 'Saturn version,' which is odd because the game is a PC executable. Senn released the following videos proving the engine build still existed, though:

Senn couldn't release the engine as he didn't have access to it, but for the most part, we had everything related to Sonic Xtreme except the game itself. His viewer worked with OpenGL and let you clip through the levels and explore them as non-playable representations of the levels themselves. In 2010, SaNIK, at Sonic Retro, built a model viewer for these levels after a few guys, including myself, cracked the level format from these files. Senn had everything from this build except the actual game engine, but that meant not only all the tiles and arts and assets, but also the actual level files. he revealed in the process that this build of the game was never running on a Saturn, but rather was a PC build of the game by Ofer Alon, the main programmer.

Several years ago, Chris Senn, one of the lead developers for the game, leaked everything he still had of the project from this build.

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