This page contains Sonic Rivals Unlockables for PSP called "Metal Sonic" and has been posted or updated on Jul 20, 2007 by mshake. Let us know what you think of this Unlockable by thumbs voting.
- Developer: Backbone Entertainment
- Publisher: Sega
- Genre: Driving Racing
- Release Date: Nov 16, 2006
- ESRB: Everyone
To unlock Metal Sonic you must beat the game with Sonic, Knuckles, Silver, and Shadow. (In no particular order)
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