Apple Stellar Invaders is a 1 player space-themed arcade game for the Apple II. Based upon Space Invaders, the player controls a small ship which can move horizontally left and right, and fire vertically. There are 3 defensive shields which can block the aliens' or player's shots. The player's goal is to shoot all alien vessels on the screen. The player received 1 point per alien destroyed for the first row, 2 points for the second row, and so on. Alien saucers appear above the screen for bonus points. The player starts with 5 lives, but it's game over if all lives are lost or if the invaders reach the bottom of the screen. The vessel can be controlled with the keyboard or game paddles.