Sonic Unleashed will launch players on a revolutionary high-speed adventure through a world torn by chaos. Powered by the all-new "Hedgehog Engine," Sonic Unleashed merges classic Sonic gameplay with the latest in next-generation innovation. It launches players on a journey across the globe and merges blistering 2D action with picturesque 3D environments. Sonic Unleashed delivers an expansive world with seamless 3D to 2D transitions and branching pathways, as well as dynamic viewpoints and a series of enhanced speed mechanics to help Sonic navigate the world.
With an exciting new storyline where day and night play drastically different roles, Sonic Unleashed will send Sonic on an unforgettable quest to save a dying world from the maniacal Dr. Eggman. Players find that Dr. Eggman continues on his mission for domination, but this time he's upped the stakes by causing a catastrophic event that breaks apart the world and unleashes a slumbering beast that alters Sonic in unexpected ways. It is up to Sonic to use his newfound abilities to connect the remnants of a shattered world by finding the lost chaos emeralds. With the world divided and Sonic facing distinctly complex challenges, including new abilities and powers, the stage is set for a climactic battle for Sonic to save the world... and himself!