Definitely one of sonic's best games that includes iconic levels from sonic's past including Green Hill Zone, Chemical Plant Zone, Sky Sanctuary Zone, Speed Highway, City Escape, Seaside Hill, Crisis City, Rooftop Run and Planet Wisp. Each world has 2 acts. Act 1 is with classic sonic and uses classic 2D side scrolling game play with spin dashes. On the other hand act 2 is with modern sonic that is 3D and uses the boost mechanic from Sonic Unleashed and Sonic Colours. There is also plenty of collectables to collect throughout the game and side missions to do.

Definitely one of sonic's best games that includes iconic levels from sonic's past including Green Hill Zone, Chemical Plant Zone, Sky Sanctuary Zone, Speed Highway, City Escape, Seaside Hill, Crisis City, Rooftop Run and Planet Wisp. Each world has 2 acts. Act 1 is with classic sonic and uses classic 2D side scrolling game play with spin dashes. On the other hand act 2 is with modern sonic that is 3D and uses the boost mechanic from Sonic Unleashed and Sonic Colours. There is also plenty of collectables to collect throughout the game and side missions to do.