Dota 2 +

Dota 2 is a multiplayer online battle arena video game developed by Valve Corporation, and the stand-alone sequel to the Defense of the Ancients mod for Warcraft III: Reign of Chaos and its expansion pack, The Frozen Throne. Initially announced on October 13, 2010, via Game Informer, the game is currently available for early test access and will utilize a free-to-play business model when released. Dota 2 is exclusively available via Valve's content delivery platform Steam. Dota 2 is currently compatible only with Microsoft Windows though Mac OS X compatibility is anticipated in the future.