Use your shield to protect your base from attacking tanks and repel their own projectiles back at them! Earn money by killing tanks and buy upgrades between levels to stay ahead of the game. You will receive one bonus point every 3, 4, and 5 levels in Sergeant, Captain, and General mode respectively... don't forget to spend them! Kill the boss tank every 10 levels before time runs out for extra bonus points.
Mouse and left click.