Twice the Fun:

• Play as both Classic Sonic and Modern Sonic in the ultimate Sonic experience. Master the moves of each character as they race through each environment on their own specially designed track.

The Best Just Got Better:

• Iconic environments from gaming history come to life in beautiful HD for the ultimate Sonic adventure, each revisited, recreated and re-imagined with stunning results. Also, these environments are presented in stunning new stereoscopic 3D for a whole new way to play!.

Unlock New Adventures:

• Once you complete each level and 'free' Sonic's captured friends, you'll get to go back and take on more challenges with them at your side.

Infamous Bosses and Rivals:

• Take on some of the most notorious characters from Sonic's past as you fight for ultimate supremacy.

Master Your Moves:

• Master Classic Sonic's famous Spin Dash and Spin Attack and utilize Modern Sonic 's 'Sonic Boost' as you complete the all new tracks.

All New Content:

• New and exclusive environments for the Nintendo 3DS include an unlockable 'special stage'. Each environment features two tracks - one for Classic Sonic and one for Modern Sonic - designed to showcase the unique features of both Sonics.

2 Player Versus mode:

• Take on your friends and earn valuable status points.

Street Pass:

• Collect new content and unlock bonus material, increasing variety, interaction and replayability.