Wii Club

Sonic Unleashed, also known as Sonic World Adventure in Japan,[7] is an upcoming video game in the Sonic the Hedgehog series. The name was trademarked by Sega on March 12, 2008.[9] Screenshots of cut scenes, artwork, and a video were leaked ten days later; [10] the title was then officially confirmed by Sega on April 3, 2008[1] with a small selection of screenshots and an updated video.

The gameplay style is markedly different when compared to recent games. It will focus on 2D side-scrolling platform gameplay, rendered with 3D visuals, as well as behind-the-back, third-person stages. Gameplay will seamlessly transition between these two styles.

Sonic Unleashed begins at the end of an untold story which sees Sonic confronting his nemesis, Doctor Eggman, bounding around a fleet of spaceships, and transforming to Super Sonic - Sonic transformed using the power of the Chaos Emeralds - in order to stop him.[7] However, Eggman manages to trap him using a powerful new ray weapon[6] which corrupts the power of the emeralds.[7] He then uses the Emeralds' energy to unleash a powerful beast from the center of the planet[11], which has devastating consequences, shattering the planet into pieces; it is up to Sonic to solve the crisis by travelling the world, finding shrines that will fix the Emeralds, in order to return the world back to normal.[7]

In addition, Eggman's ray also causes an unexpected transformation to Sonic's state.[6] Allusions made in the press release to a new twist to Sonic's abilities, combined with leaked artwork and the official teaser trailer - entitled "Sonic Unleashed - WereHog Teaser Trailer"[6] - indicate that Sonic's progress will be made even more difficult when the ray and the transformed Emeralds have the unforeseen side-effect of transforming him into a werewolf at night.[