"Sonic & Sega All-Stars Racing is a racing game in the Sega Superstars series produced for Wii, Xbox 360, PlayStation 3, Nintendo DS and Microsoft Windows, featuring characters from many Sega franchises. It is being published by Sega and developed by Sumo Digital. It was announced on May 28, 2009 and was released in North America on February 23, 2010 and in Europe on February 26, 2010, with the PC version available both from retail and via Steam. A Japanese version is planned to be released by Sega in 2010. A mobile version has been developed by Gameloft."
Source: Wikipedia, "Sonic & Sega All-Stars Racing", available under the CC-BY-SA License.