Cheating in video games has existed for almost their entire history. The first cheat codes were put in place for play testing purposes. Playtesters had to rigorously test the mechanics of a game and introduced cheat codes to make this process easier. An early cheat code can be found in "Manic Miner", where typing "6031769" (based on Matthew Smith's driving license) enables the cheat mode. Within months of ""s 1981 release, at least two commercial trainers appeared. 1983 advertisements for "The Great Escape Utility" for "Castle Wolfenstein" (1981) promised that the $15 product "remodels every feature of the game. Stop startup delays, crashes and chest waiting. Get any item, in any quantity. Start in any room, at any rank. Handicap your aim. Even add items".