At the 2011 Game Developers Conference, Sega revealed that it has decided to port its Sonic and Sega All-Stars Racing game to the iPhone and iPod touch (no iPad announcement yet, but presumably it's coming). Sega then handed us a demo of the game to try out. It was (surprise?) a pretty standard kart racing game, with the added bonus that it uses official artwork, settings, characters and music from Sega's most popular franchises, from Sonic the Hedgehog to lesser-known classics like Billy Hatcher and Space Channel 5.
This game's been out on other console platforms already, and to be honest, it's missing a little content, with fewer characters and tracks than the other versions. But the gameplay is all there; up to two players on Bluetooth or four players on Wi-Fi can race against each other across 12 tracks using 10 different characters. There are also three arenas to play in, as well as 30 "challenge missions" to play. As you race, you collect "lifetime miles" which unlock items in the game and break open official Game Center achievements and leaderboards.