The Towers of Doom are a dark, mysterious city that has been laid claim to by both the Raven Lord and the Grave Keeper. Each seek to annex it into their territories within the Nexus. Now locked in a struggle for dominance over the little gothic burg, these mythic beings demand that heroes contribute their might to this endeavor. Whether born from necessity, or merely for sport, their true intentions may never become clear.
Cores start at 40 HP and are surrounded by a barrier that cannot be breached by the opposing team, which deals heavy damage over time to nearby enemy heroes and minions. The objective is to capture towns and the towers located within them to unleash damage upon the captors' opponent's core, rather than attacking it directly with heroes.
- Towers, once claimed, take on the identity of the capturing team - Raven or Grave Keeper. They start as ghostly versions, then become more solid over time.
- Towers can attack the core while they are ghosts, but cannot attack creeps or heroes until fully formed.
- Destroying the tower means it will reform under the opposite team's appearance.
- If a team holds all 6 towers, their core will automatically deal 1 damage to the enemy core every few seconds until the opposing team retakes a tower.
Periodically, a number of altars will activate across the map. These altars can be captured by heroes after a brief channeling time, which can be interrupted by attacking the capturing hero. When an altar is captured, the capturing team's core and all towers under their control will each fire a shot at the enemy core, dealing 1 damage apiece.
Sappers at the mercenary camps charge structures and explode, doing large amounts of damage. If a Sapper reaches the end of a lane, it will charge the enemy core for 1 point of damage.
The Headless Horseman functions as a boss on the map. Upon defeating him and capturing his location, the cellar doors there will open and release a damaging volley at the enemy side, dealing 4 damage to the enemy core.