Alien Munchies is a 1-player arcade game for the Apple II. The player controls a spaceman armed with a large barbecue. He can move horizontally on the bottom of the screen trying to catch aliens as they fall from the sky, so he can grill and eat them. If an alien fall to the ground, the barbecue will explode when the player runs into them. The player has a small gun which can shoot vertically upwards, that can be used to shoot aliens or propane tanks. The player has a limited supply of propane, which continues to decline as the play continues. They player can shoot and collect propane tanks to increase their fuel. The player starts with 3 lives, and it's game over when all are lost or if the player runs out of propane.