As per title. Most computer games these days are made with such unnecessary padding that I want to murder the devs or myself by the end. See, for example, Hyrule Warriors, the 100% 1000 Hour Nightmare, the Review.
The second game I ever 100%ed was Arceus and I still can’t stand the thought of picking it up again, years later. The first game was Horizon Zero Dawn, which is still fun.
Metroid Dread.
I beat the game on Normal, then went back to 100% it, then immediately played again on Hard mode, beat that and 100% it again.