Pots are now breakable.
Some camera fixes.
Collision no longer crashes.
A death plane has been added.
Chairs, tables, potted plants, parasols and barrels can no longer be moved around.
The Title Screen, World Map and Results music have been changed to their Sonic Unleashed counterparts.
Omnidirectional lights have been added.
Acts for Classic Sonic, Avatar and Shadow have been added.
Pretty cool, huh?