1. A system for electronic trading, comprising: an interface application including a mapping module that defines a plurality of controller signal relationships, each controller signal relationship associating one of a plurality of game controller signals with one of a plurality of trading system commands associated with the electronic trading of financial instruments; wherein the interface application is operable to receive a particular game controller signal, determine the trading system command associated with the particular game controller signal using the mapping module, and communicate the determined trading system command such that the trading system command is executed.