Alien Guard 2

Protect yourself by shooting the aliens as they attack you and your base! Use the mouse to aim and the left button to fire as you fend off wave after wave of alien suicide bombers, as well as alien space crafts that you must avoid. Use your arrow keys to jump and duck to avoid the airborne attacks. You can also use the left and right arrow keys to move your base. This game gets progressively difficult as you move along through the game. Don’t forget to catch the money and the health powerups!