A game controller is provided. In one embodiment, the game controller includes a main body, a trigger device, and a first adjustment mechanism. The trigger device has a trigger body coupled to the main body and that pivots along a pivotal axis relative to the main body. The first adjustment device has a first surface that contacts a second surface of the main body at a first point of contact when the trigger body is moved. The first adjustment device is movable along a first axis such that the first point of contact is adjusted along the first axis.