Sonic's universe is plunged into chaos when a mysterious new force comes into play, creating time holes that bring Sonic and his friends back to the past. There, Sonic encounters some very familiar characters from his history, including a younger, classic version of himself. Now they must defeat their enemies, save their friends, and uncover who is behind this diabolical act.

Double the Fun
Play as both Classic Sonic and Modern Sonic in the ultimate Sonic experience. Master each character's moves as they race through their specially designed tracks in every environment.

The Best Just Got Better
Iconic environments from video game history come to life in stunning HD for the ultimate Sonic adventure, each revisited, recreated, and reinterpreted with breathtaking results. Additionally, these environments are presented in stunning new stereoscopic 3D, allowing for a whole new way to play.

Unlock New Adventures
Once you've completed each level and freed Sonic's captured friends, you can return and take on more challenges with them by your side.

Notorious Bosses and Rivals
Face off against some of the most notorious characters from Sonic's past as you battle for ultimate supremacy.

Master Your Moves
Master Sonic's famous Spin Dash and Spin Attack, and utilize Modern Sonic's Sonic Boost as you conquer the brand new tracks.