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In this version of Sonic Unleashed Eggman manages to defeat Sonic, using the tremendous power of the Chaos Emeralds to entrap him. The sheer force of the attack had also broken down the planet into pieces, and released the mysterious dark creature called Dark Gaia from within the depths. Eggman then leaves Sonic trapped along on the broken planet, along with the now-drained Chaos Emeralds. It is now up to Sonic to retrieve and recharge the drained Chaos Emeralds, save the planet, recapture Dark Gaia, and defeat Eggman for good.

The game features both daytime levels, which focuses on Sonic's overdrive speed, and nighttime levels, which are more combat-focused, as Sonic transforms into a fearsome-looking yet powerful Werehog beast, as a side-effect of the Chaos Emerald attack he had suffered from.

The PS2 and Wii versions feature an almost completely new mix of levels as well as a different game engine.


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Promo Images

Sonic: Unleashed Screenshot
Sonic: Unleashed Screenshot
Sonic: Unleashed Screenshot
Sonic: Unleashed Screenshot


Alternate Titles

  • "Sonic: Unleashed - La Malédiction du Hérisson" -- French title

Part of the Following Groups

User Reviews

Right game, wrong version? PlayStation 2 Bob the Stickman (299)

Critic Reviews

Official Nintendo Magazine Wii Nov 28, 2008 79 out of 100 79
GameTrailers Wii Dec, 2008 7 out of 10 70
Cheat Code Central Wii Dec, 2008 3.5 out of 5 70
GameSpot Wii Dec 12, 2008 7 out of 10 70
Meristation Wii Nov 25, 2009 7 out of 10 70
Cubed3 Wii Jan 29, 2009 6 out of 10 60
Game Shark Wii Dec 08, 2008 C 50
Armchair Empire, The Wii Jan 25, 2009 5 out of 10 50 PlayStation 2 Dec 19, 2008 5 out of 10 50
NintendoWorldReport Wii Dec 01, 2008 4 out of 10 40


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Contributed to by qwertyuiop (33318) and Jeanne (76520)