In his latest plot to defeat Sonic and rule the world, Dr. Eggman has harnessed the power of menacing creatures known as the Deadly Six. However, when the Deadly Six rise up against their new master, Sonic must unite with his arch nemesis Eggman and explore the mystical Lost Hex in order to take them on head-to-head. Use Sonic’s amazing new moves & incredible Colour Powers to speed across a variety of unique terrains, racing inside, outside & upside down in every level.NEW MOVES Sonic moves like never before. Vault over obstacles, free run up & along walls & sky dive between islands at lightning speed. Plus the Spin Dash is back!COLOUR POWERS New & improved Colour Powers. Sonic can now fly through the air, tear up levels & explode into enemies. He’s more powerful than ever!NEW WORLD Speed through a variety of exhilarating levels. Explore massive mind-bending courses, vast underground tunnels & colossal structures in the sky as you run inside, outside & upside down.BOSS BATTLES Save the world one fight at a time. Take on each of the devious Deadly Six in dynamic boss battles which test all of Sonic’s moves & power-ups.NiGHTMARE ZONE DLC Included Includes NiGHTMARE Zone DLC free - featuring monsters inspired by the hit game 'NiGHTS into Dreams'PLUS – Now with new and improved PC Features: 60 FPS gameplay HD resolution support Full PC Gamepad + Keyboard support Full Steam functionality