However, this is revealed to be a ruse as Eggman has deliberately lured him into a trap where Sonic is struck by an electrical field, stripping him of Chaos Emeralds and then has negative energy channelled into him, prompting the Werehog transformation. Eggman eventually captures the hedgehog, but to his horror Sonic wields out the Chaos Emeralds he had been keeping the whole time, and activates his super transformation to break free and chase the helpless doctor, who flees until he becomes cornered and desperately seeks Super Sonic's forgiveness in a show of remorse. Eggman's Egg Fleet spaceships and wreaking havoc there, in his usual business of thwarting the evil doctor's schemes. The game kicks off with Sonic the Hedgehog boosting through his arch-nemesis Dr. The game had received very divided reception at the time and despite the shortcomings of the Wii and PS2 versions, they actually gained higher Metacritic scores than their Xbox and PS3 counterparts.

The Xbox and PS3 versions completely differ from the Wii port as they feature HD graphics, hub worlds, different level designs and made use of the Hedgehog engine.

The game was additionally released for Xbox 360, PlayStation 2, and 3 consoles.

The level stages also combine 3D and 2D.5 perspectives, shifting between the two throughout. The game is split into two distinct styles, day and night - the former incorporates Sonic's normal platforming with fast pace and a multitude of alternating paths in typical Sonic fashion, whilst the latter features a completely new gameplay as Sonic transforms into his 'werehog form', with combat-oriented platforming that sacrifices speed for power. Whilst the game is mostly centred around traditional platforming as is characteristic of Sonic games, the game also incorporates 'beating 'em up' which takes place in the night mode as the game transitions from day into night. The game is stylised upon a premise of a world adventure through day and night. Developed by both Dimps and Sonic Team and published by Sega, the game adds a new element to Sonic the Hedgehog by introducing his 'werehog' form, adding a new twist to the Sonic game which is usually centred around defeating Dr. Meaning: Sonic World Adventure) is a video game for the Wii released in 2008.

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