In this game you are the bill the bullet and which is out to hit the Mario and luigi. Use the arrow keys to move upwards, downwards, back and in forward. Try to hit the bricks and get points, but if you hit the platforms then you will crash. You have to be quick and alert while moving forwards. Hit the flag at the end of the each level and get big bonus points. Hit the Mario and the luigi at the end of the X4 level.