In a recent interview with Ogawa Yojiro at Gamekult, some new details about the Sonic the Hedgehog game for the Wii were revealed.
1. The game will have 70 “missions”
2. Approx. 10 hours to finish all the missions, that does not include getting all the medals and hidden stuff.
3. Over 30 mini-games with up to four players
4. Sonic is the only playable character (unclear whether this includes the multiplayer mode also).
5. Possiblity of having downloadable content in the future.