An action replay is like a cheatcode disc that you can put in your different sytems (Ps2, X-box, Gamecube, GBA, ETC.) anyway, you can select all sorts of cheatcodes for different games on an action replay disc that you cannot normally do with regular cheatcodes (hidden characters, inf. life, ETC.). they can be located in any store that has games or game-related. I usually go to my local electronic store. you can also get a gameshark if you want, a gameshark is basically the same thing as an action replay except it's made by another company or somethin'. hope I helped.
