- Sonic will have new actions
- Wii stages follow the theme of 360/PS3 levels, but they are built differently for the Wii.
- Both Sonic Advance 2 and Sonic Rush teams helped create levels
- there is motion control
- interactive combat featuring Wiimote and Nunchuk
- Action-Chaining: string together actions and special moves to build up power
- Quick-time-event aspect for multiple paths
- day and night levels, but no passage of time within levels
- Originally supposed to be Sonic Adventure 3
- No multiplayer or online modes

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