Sonic Unleashed demo is now available for download on the Xbox Live Marketplace. The demo is available in all Xbox Live regions (excepy Japan).

On a quest for domination, Dr. Eggman unleashes a slumbering beast from the center of the world. The event causes a devastating tremor that splinters the world into several continents and triggers a mysterious transformation in Sonic. With the world divided and Sonic altered with new abilities and powers, the stage is set for a climactic battle. Join Sonic in a race around the world, but as the sun sets, prepare for a new adventure in Sonic Unleashed. From new hair-raising speed mechanics to powerful combat moves and agile platforming action, Sonic Unleashed is powered by an all-new game engine and merges classic 2-D Sonic gameplay seamlessly with amazing 3-D perspectives.