Diablo 3’s most extreme case of an altered difficulty setting lies in its “Torment” mode. This game mode consists of 16 levels of increasing difficulty, with higher levels resulting in stronger monsters and higher legendary drop rates.
At level 16, the chances of encountering rare legendaries skyrocket to over 1,200%. With proper knowledge of which items to seek out during different seasons, players can power scale their characters early on and create an unkillable character. However, beyond a certain point, the odds become so skewed in favor of legendary drops that it becomes more of a guaranteed win than a challenge.
This extreme case highlights how altering drop rates significantly impacts gameplay difficulty, and Diablo 3’s Torment mode is a prime example of this phenomenon.
Source: https://whatculture.com/gaming/10-video-game-hard-modes-that-made-games-easier?page=5