"Space Dungeon is a shoot 'em up arcade game created by Taito Corporation in 1981. It was designed and programmed by Rex Battenberg. It was released both as a conversion kit and as a full arcade cabinet. The only home version of the game was released in 1983 for the Atari 5200 game system. Like Robotron: 2084 and Smash TV, the uncoventional controls for Space Dungeon are a pair of 8-directional joysticks (one for moving, one for shooting) rather than the more typical single joystick and fire button. This mechanism allows plays to shoot in directions other than that in which they are moving." Source: Wikipedia, Space Dungeon , available under the CC-BY-SA License.