New 3d game coming from Valve for the PC and Mac! Dota 2 a unique blend of online RTS and RPG action

“What does a hero truly need?
Find out when the world’s best players compete in the first ever Dota2 professional tournament August 17th – 21st at Gamescom in Cologne, Germany. Watch live streaming games and replays at Dota2.com.
Visit Steam to download the 1080p HD version of the trailer.”