Sonic & All-Stars Racing Transformed is now on PC with exclusive characters, according to a post on developer Sumo Digital's Facebook page.
The additions include characters from Football Manager Man, Team Fortress 2, and Total War: Shogun, and each has his own transforming vehicle.
This version also features full controller support for Steam Big Picture and four-player split-screen with up to 10-player online events. It costs $29.99.
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Via: Sonic & All-Stars Racing Transformed speeds onto Steam