Upshift Strikeracer (USR) was a MMO racing video game developed by South Korean studio NChannel and published by gPotato for PC. The game consists of multiple cars that race each other and featuring guns and other weapons that can be mounted to battle and race against other players. The game was released in Summer of 2007 by its publisher. The game service was terminated on 5 October 2010 due to expiration of licensing agreement.
NChannelhttp://www.worldsinmotion.biz/2007/07/gpotato_launches_upshift_strik.php Worlds In Motion - gPotato Launches Upshift StrikeRacer With Open Beta