The kingdom is under attack! Defend your realm against hordes of orcs, trolls, evil wizards and other nasty fiends; armed with a mighty arsenal of warriors and mages of your own!.
Build towers to attack incoming enemies and stop them from getting past your defenses. Earn gold by defeating enemies and use it to build more towers.
 - Select/Cancel Rain of Fire spell.
 - Select/Cancel Reinforcements spell.
 - Activate/Cancel Sunray Tower.
[SPACE] - Cancel any selected spell/power/rally point.
[P] - Pauses the game.