Ammo Ambush is completely addicting shooting game fun.
It's you against an entire army. Good thing the army can't hit the broad side of a barn! Also good that you have an awesome arsenal of weapons to keep the bad guys at bay. As a last resort, use your Air Strike to take out everything on the field, but doing so will end the game.
Protect your computer from the Killer popups using your trusty Pea Shooter!