Valve, creators of best-selling game franchises like Counter-Strike,Half-Life, Left 4 Dead, Portal, and Team Fortress and leading technologies like Steam and Source, is moving The International Dota 2 Championships 2012 to its home town of Seattle. The International was launched last year in Cologne, Germany during Gamescom with 16 of the most elite Dota teams competing in a group stage, double elimination playoff format for a grand prize of $1 million.