Recent reviews by iShagitGAW

Dota 2 runs on a heavily modified version of the Source Engine. This version builds upon features introduced with Portal 2 and the Orange Box versions of the engine, such as flowmaps and advanced particle rendering, by adding features such as improved spectator support and cloth physics. Dota 2 supports a matchmaking system and up to 10 players in game at one time, but allows for large numbers of spectators at any given game.