In celebration of the blue hedgehog's 20th birthday, things and monsters happen in his world: a mysterious force opens a hole in time and transports Sonic and his friends to the past. There Sonic meets himself, as it was in 1991. Together they will once again take on the task of bringing order to the world. Modern Sonic and classic Sonic must face new threats, save their friends and discover what lies behind the mysterious time holes.
FEATURES:
- Ability to choose a role between modern and classic sonic.
- It features familiar environments renewed in HD which are playable both in classic side scrolling 2D, and in a modern 3D style similar to the recent Sonic games
- Sonic revisits three classic tracks from the legendary Sega Mega Drive era, Green Hill Zone, Chemical Plant and Sky Sanctuary.
- It includes many missions
- Single player