Gravis PC GamePad

The Gravis PC GamePad is a game port game controller produced by Advanced Gravis Computer Technology. It was the first gamepad for the IBM PC compatible in a market then dominated by joysticks. Included with the gamepad was a shareware Commander Keen game, episode 1, Marooned on Mars, which was later replaced with the shareware episode 4, Secret of the Oracle which supported all 4 buttons. The gamepad is no longer manufactured, as the Gravis company has ceased to exist.

The gamepad's design is similar to that of the stock SNES controller (more so the Japanese and European version with colored buttons), although it lacks the Start, Select and shoulder buttons, and the shape of the controller's chassis differs slightly, with an inverted curve on the left side. As originally found in some versions of the Sega Master System controller, the center of the Gravis GamePad's d-pad allows a small joystick to be inserted. The resulting lever action provides increased directional sensitivity, desirable in fighting games for example.

Both at the top and bottom of the gamepad are switches. One of them removes the normal functionality from 2 of the buttons, and turns them into autofire variants of the first 2. This gave all four buttons functionality even in PC games that only supported two buttons on joysticks or for scenarios when two gamepads are connected with a Y-splitter. The other allows for left-handed operation by turning the workings of the D-pad and buttons upside down. Both switches can be used at the same time.