DOTA 2 is an upcoming MOBA game from Valve based on the original Defense of the Ancients mod from Blizzard's Warcraft III: Reign of Chaos and The Frozen Throne. Much like DOTA, DOTA 2 will incorporate players using a hero character assisted by supporting units to attack and defend a series of strongholds on the edges of the game map. Across the middle of the map will be defensive towers that players must navigate through in order to reach the enemy stronghold.