Note: This trick requires a maze with both a left and right exit. To fire a shot that goes around the world, move your character as close as you can to the exit on the right side. This should be so close that one more step will make the player exit to the next maze. Then, while facing the exit, press Fire button to shoot "around the world". The shot will seem to repeat itself at the edge several times. It will then come out the right side exit and continue to move for a short distance. This is a great way to safely destroy robots on the other side.