According to various embodiments of the invention an adapter apparatus is provided that is combinable with a computer or video game controller. In accordance with one embodiment, the adapter apparatus is a controller adapter, comprising: a housing configured to attach to a controller having a controller input, wherein the housing at least partially covers the controller input when the housing is attached to the controller, the housing comprising: a holding mechanism configured to secure the housing to the controller when the housing is attached to the controller; an adapter input disposed on an exterior surface of the housing opposite the controller input; and a translation element positioned between the adapter input and the controller input such that a user input to the adapter input translates to a corresponding user input to the controller input.