Dota 2

Dota 2 is an Action RTS game, developed by Valve Corporation. The title was formally announced on October 13, 2010; and is set to release early 2012 by Valve, through both retail and Steam, for Windows and OS X. It is the successor to the very popular Warcraft 3 mod, Defense of the Ancients, which was based on Aeons of Strife map for StarCraft.