Passing through locked doors to obtain treasure items is a waste of magic in the FDS version because items have to be struck with Link's sword in order to collect them, which he can't do in Fairy form.In the Great Palace, bypassing the barrier early with the Fairy spell is instant death, regardless of how much life Link has remaining.May be a result of fine Developer's Foresight. Also related to some examples of Copy Protection, where the game punishes the player for pirating. Compare Easy-Mode Mockery, where the game just doesn't like you making it easier for yourself. Of course, the game's own AI is never penalized for cheating, because everybody knows The Computer Is a Cheating Bastard. In extreme cases, the game can permanently 'brand' the player's save file with some kind of designation to indicate the use of cheat codes (some games can erase their save file outright). These countermeasures can vary from simple messages and reminders that constantly remind (and hopefully embarrass) the player about not playing by the game's intended rules, to more serious measures like denying access to certain features (bonus content, achievements, etc.) while cheats are in effect. Many video games have measures built in to punish the player for cheating (whether by built-in cheat codes or external cheating/hacking devices). Revolver Ocelot while looking directly into the camera, Metal Gear Solid

Survivors: the quest cheat engine