I think that, aside of occasional "nightmarish" moments, cheats have no sense. If I cannot play the game as is now, why to cheat? To not able to play it ten minutes later? Oh, come on, I'd better change the game.
I know only one exclusion - action/adventures 80s without saves (like Dizzy, for example) where lives are limited, essentially transforming game into "arcade with some adventuring". I wholehearted welcome cheats that removes this strange limits. Fortunately, since 90s it's always warm saves that awaiting me in case of emergency.
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