1. A system for electronic trading, comprising: a memory operable to store: a first set of controller signal relationships, the first set associated with a game controller and a first user; and a second set of controller signal relationships, the second set associated with the game controller and a second user; wherein at least one controller signal relationship associates one of a plurality of game controller signals with one of a plurality of trading system commands associated with electronic trading of financial instruments; and a processor communicatively coupled to the memory and operable to: receive a particular game controller signal from the game controller; access at least one of the stored sets of controller signal relationships based at least in part on an identified user of the game controller; determine the trading system command associated with the particular game controller signal based at least in part on the at least one determined set of controller signal relationships; and communicate the determined trading system command.