Devil Defence

How to play:
Demons spawn from each cardinal direction and try to destroy the apple. To defend the apple, select a summoning circle and purchase an angelic unit. Once a unit occupies a circle, use the mouse to shoot at the demons. Click off of the summoning circle to deselect it. Units occupying a deselected circle will have their aim locked and their fire rate decreased.

Credits: Evan Youssef, Aidan Quinn