Often times designers copy the same resource many times to build a level/game. Maybe they modify the resource a little bit, but it's still mostly a copy. There

Often times designers copy the same resource many times to build a level/game. Maybe they modify the resource a little bit, but it's still mostly a copy. There is no deduplication, the n copies get stored n times. Admittedly, it's also done to improve load times, but making piracy harder is I think another benefit for the game creators.