You are part of an underground expedition on another planet when disaster strikes. You must fight to survive as enemy space ships and force fields appear, making it your mission to destroy them before they can cause harm. To do this, you use the joystick to move a reticle target and press the red button to fire at the enemies. However, these are not easy foes - their proximity will result in you losing energy, and if they catch up with you, game over. On the other hand, identifying force fields by looking for a square on your left and then shooting them off to disable their effects can add valuable time to your survival.
The gameplay is simple yet challenging. You must use the map at the top of the screen to decide which path to take - go left or right. However, taking the wrong route will only increase the difficulty and put you at greater risk of losing energy. With the option to earn more energy by destroying enemy ships or disabling force fields, your mission is to stay alive as long as possible.