In this game you control a tank fighting off attacking aliens. You can aim with the mouse and the tank will follow. Press the left mouse button to fire a weapon. Use W and S or the scroll wheel on your mouse to change between weapon. A feature of this game is that your weapons will gain experience when they hit enemies so while a single barrel bullet will start off with 1 dmg upon leveling up it may do 2 or 3 dmg. Your weapons can level up four times. If you have any nukes and you press spacebar it will clear all enemies and bullets from the screen. Collect power ups and avoid enemy fire. You can blow up some enemy bullets depending on the enemy that fired them. Good luck!