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Sonic Unleashed (Wii)

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Title Screen

Sonic Unleashed

Also known as: Sonic World Adventure (JP), Sonic Unleashed: La Malédiction du Hérisson (FR)
Developer: Sonic Team
Publisher: Sega
Platform: Wii
Released in JP: February 19, 2009
Released in US: November 20, 2008
Released in EU: November 28, 2008
Released in AU: November 27, 2008


AreasIcon.png This game has unused areas.
GraphicsIcon.png This game has unused graphics.
ItemsIcon.png This game has unused items.


This version of Sonic Unleashed is vastly different from its higher-end counterpart. While the story, gameplay concept, and level locations are the same, its level design, progression, and control schemes are totally distinct.

This version would be developed and released simultaneously with its PlayStation 2 counterpart. Although it is the same game as it is on PS2, there are some differences: the Wii version has higher-quality graphics, sound, and widescreen support, but (unsurprisingly for a Wii game) takes steps back in its controls, with character handling and combat being simplified to allow for motion controls.

Hmmm...
To do:
  • Many tutorials/missions feature strange stuff out of bounds that hint at earlier layouts.
  • The stage files indicate that there was supposed to be a second daytime act for each continent. Most continents have missions taking place on what would've been Act 2, with only Cool Edge and Eggmanland missing them.
  • The Werehog acts appear to have been designed as massive individual stages that were split into smaller levels to save memory. Document this.
  • The Dark Gaia running stage texture folder contains assets for what appears to be Empire City, which doesn't appear in the Wii version at all.

Unused Graphics

Trial and TGS Version Leftovers

These graphics can be found in one_wii/title in the directories labeled TGS, and exist in both Japanese and English.

Unused Options

The one option which is not avalible in the final build, it's the Vibration Settings

Unused Sun and Moon Medals

These are unused Sun and Moon Medal graphics which are earlier versions of the medals seen in the final game. Interestingly, the Werehog life icon is shown here which is not present on the map in the final game. These textures can becan be found in the one_wii/work directory in the KeyMain.onz file.

Unused Objects

1-up Item Box

UnleashedWii 1up.png

In Apotos' 2nd nighttime tutorial, an unused 1-up item box is loaded outside of the mission barriers, where a regular secret item box normally exists. The graphic is taken from the 2006 version of Sonic the Hedgehog on Xbox 360 and PlayStation 3 instead of a triangular shaped item box with an image of Sonic's head used in the final game.

Its presence in a level hints that the game used to feature a more traditional lives system (in the final game, a maximum of 14 extra lives are permanently obtained only in Gaia Temples, and are automatically replenished after completing a stage). However, collecting it no longer has any effect.

1-UP Item box can be seen at 1:50 mark