Second Annual Dota 2 Championships Broadcast Live This Weekend Valve, creators of best-selling game franchises (such as Counter-Strike, Half-Life, Left 4 Dead, Portal, and Team Fortress) and leading technologies (such as Steam and Source), today announced the start of The International Dota 2 Championships 2012. The event takes place today through Sunday at Benaroya Hall in Seattle, WA. ... more.