The game is set in a ammunition compound viewed from above with the whole compound on the screen.
You have the choice of playing either as a saboteur trying to place an explosive and cause as much damage as he can, and a guard trying to prevent the saboteur from succeeding.
Playing as the guard sees you trying to predict the movements of the Saboteur in a set number of moves.
You are armed with a truncheon and if close to the Saboteur then he will move out of your hitting range.
You must try to corner the Saboteur or prevent him moving to his target as he will blow himself up. Points are awarded or deducted for any prevention or damage caused.
Playing as the saboteur now has you trying to place the explosive while avoiding the guard who now is armed with a rifle in a set number of moves.
Once again points are awarded or deducted according to how much damage is caused or if you are caught or shot.