Sonic is charged with saving the world after Dr. Eggman breaks it up in this fast-paced game featuring the custom-tailored "Hedgehog Engine."

Sonic the Hedgehog is on an adventure unlike any other! Powered by an all-new engine, Sonic Unleashed" merges classic Sonic gameplay with the latest in next-generation innovation. Merging blistering 2D action with meticulously rendered 3D environments, players race through intriguing locations across the globe as Sonic to save a chaotic world. On a quest for domination once more, Dr. Eggman unleashes a slumbering beast from the center of the world. The event causes a devastating tremor that splinters the world into seven continents and triggers a hair-raising transformation in Sonic. With the world divided and Sonic altered with new abilities and powers, the stage is set for a climactic battle& for when the sun sets, a whole new adventure awakens! FEATURES " Sonic's World Transformed: Sonic maintains his high-speed abilities during the day, but at night he is transformed into a mysterious dark form with incredible never-before-seen abilities including 3D-action brawling and amazing agility. " Tight Navigation and Speed Control: Players accelerate to super speed with 'Sonic Boost' by collecting rings to increase Sonic's 'Ring Energy.' Using 'Quick Step,' players will quickly move left or right to avoid obstacles instantly. Additionally, 'Speed Drift' allows players to rocket through turns without slowing down. " Powerful New Engine and Cinematic Graphics: With its new propietary "Hedgehog Engine," Sonic Unleashed enhances the classic 2D perspective with mind-blowing 3D stages. Other next-gen technology capabilities include global illumination, grid computing, continuous data streaming and an intricate path finding system. " Enhanced and Expanded Environments: Many unique and fascinating continents offer the player an opportunity to save the world in a dynamic, high-speed experience. In addition to exploring exciting unlockable areas, players dash through up to nine locations resembling real-life destinations including the Great Wall of China, Arctic Pole glaciers and many more.