Changing stuff on a single player video game is not cheating.

Cheating can only exist on a competition, like on multiplayer, because you are expected to fair play with another human being.

To think that playing on your own and changing the parameters of play is cheating is a limiting and constrained, and honestly sad, point of view. It’s like punishing a kid for imagining that a toy has super powers. Extremely soul crushing and anti-creativity. If you are playing on your own, then there’s no cheat. Your play, your rules, no punishment for changing your mind. The play field exist to play, not to impose arbitrary and oppressing notions of real life judgement. You can’t cheat, when you are just playing for fun.