Concept
Cheating in video games involves a video game player using various methods to create an advantage beyond normal gameplay, usually in order to make the game easier. Cheats may be activated from within the game itself (a cheat code implemented by the original game developers), or created by third-party software (a game trainer or debugger) or hardware (a cheat cartridge). They can also be realized by exploiting software bugs; this may or may not be considered cheating based on whether the bug is considered common knowledge. 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 Wizardry: Proving Grounds of the Mad Overlords 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". In a computer game, all numerical values are stored "as is" in memory. Gamers could reprogram a small part of the game before launching it. In the context of games for many 8-bit computers, it was a usual practice to load games into memory and, before launching them, modify specific memory addresses in order to cheat, getting an unlimited number of lives, currency, immunity, invisibility, etc. Such modifications were performed through POKE statements. The Commodore 64, Amstrad CPC range and ZX Spectrum also allowed players with the proper cartridges or Multiface add-on to freeze the running program, enter POKEs, and resume. Some games tried to detect the Multiface and refused to load if it was present.
Daniel Gatica-Perez, Laurent Son Nguyen