Sonic The Hedgehog's Lost Skateboarding Game - Unseen64

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Footage of Sonic Extreme prototype courtesy of Andrew Borman:

Unseen64 is an independent, non-profit online archive dedicated to the preservation of videogame history. Unseen64 contributors help document prototype, cancelled and unreleased videogames by archiving information, images, and videos for future reference and analysis. The organization is led by a collective of gamers from all around the world. If you would like to contribute, please read more at:

This video details the development of a prototype skateboarding game titled Sonic The Hedgehog Extreme. Sonic Extreme was developed by Vision Scape Interactive, and was originally developed without SEGA's consent. The project reused technology developed by Vision Scape for their Tech Deck Playset software, as well as a cancelled game based on Nickelodeon's Rocket Power cartoon. Vision Scape presented the pitch to Sonic Team's Yuji Naka, and Naka seemed to be impressed. Communication from SEGA broke down after this meeting however, and the project progressed no further. Around two years later, SEGA demonstrated their new title, Sonic Riders, which resembled Vision Scape's pitch. Vision Scape hoped that the project would find its way to Xbox, Gamecube, and PlayStation 2 (PS2) once it was finished.

Liam Robertson is a video game researcher and archiver. In his spare time, Liam creates videos and articles for Unseen64, but will also be contributing to the DidYouKnowGaming channel.

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