(Controls:)

Spawn Yellow Turret: Press on a wall

Spawn Black Turret: Double click on a wall or Yellow Turret

Spawn White turret: Click on Black Turret

Make enemies stronger: H (This makes them red and removes the obstacles; they get 25 health for every 0.1 seconds your finger presses the key.)

Destroy Yellow Turret: Click on the Yellow Turret you want to destroy.