The game pushed the 1970's hardware of the Atari to its limits. It featured a maze inhabited with monsters. The goal of the game is to get out of the maze and avoid the monsters.
In my opinion it is the most graphically advanced 3D game on the console. Very few people were aware the game existed because it didn't have an established marketing network like other games providers. They even tried to add some shading to give some depth to the game.