Use the mouse cursor to aim and fire on the alien invaders. As a cow protector your jobs is to rescue the cows by shooting on the alien invaders. Use the keys from 1 to 6 to choose your gun.
Get rid of the blue monsters, get all the money and buy upgrades. Escape and level up. Use WASD or arrow keys to move and shoot with the mouse. Q,E to switch weapons.
You're all alone and a group of zombies are trying to get rid of you. Shoot and get rid of them to survive. Use the left-right arrow key to move. Press space bar or up arrow key to attack. Beat all the levels and get more weapons as knives, guns, and more.