Since Sonic’s face has been slapped on nearly everything you can imagine, it wouldn’t surprise some of you that there were some failed concepts for other non-platforming Sonic games knocking about once. However one cancelled spin off actually did make it to game development, that being the unreleased skateboarding game Sonic Extreme. The game seems to be a full version, of the tiny part of, the City Escape level in Sonic Adventure 2.
A youtuber by the name of ‘ProtonX3’ has found this game on an original development and has more videos of the unreleased game. Hit the jump to see the other videos that have emerged.
[Source: Sonic Retro. Thanks Devin!]
As you can see here the game would also feature a combat mode too. No news or confirmation from anyone here but I’ll keep you up to date when more information of this mystery game is brought to light.