Attack Of Zero: Defend your Tree from those evil monsters which have taken the form of a humunoid make sure that they don't destroy your nature, Defend that tree with your life. There are also some guns which will give you some fire power to knock them back! The tree has gotten used to this sort of abuse so it has inplanted leaf defensive!
Move the mouse to move the gun, Click / Hold to fire those bullets. Make sure the people don't harm your tree.