How to play: 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.
 - Select/Cancel Lightning Bolt spell
 - Activate/Cancel Sunray Tower.
[SPACE] - Cancel any selected spell/power/rally point.
[P] - Pauses the game.