Cheating hacks are any modification of the user's system, of the game executable directly, or of the executable through another application, that is thus not normally available in Doom and provides an advantage to one player over others in multiplayer games or speedrunning events, with regard to: * humanly-executable player movement, * visual abilities, * audio abilities, * player aim abilities, * mechanisms to locate the opponent, * features that slow the game to the player's advantage, or * the possibility to redo portions of a challenge.