Laser cannon 3 is an online shooting and aiming game. Shoot the laser cannon by clicking or tapping the screen, and move the cannon with the arrow keys to find the best angles. Use the metal walls to bounce the laser beam and hit the monsters hiding in the different levels. Destroy all the enemies by shooting with the cannon. Use the levers, explosives, shoot objects to make them fall on top of the monsters and remove the protective barriers used by the monsters.