For mechanically difficult games, definitely agree. Celeste is an example I usually bring up - it’s a platformer that can get pretty tough at times, especially in the after-story optional levels. But it also has one of the most flexible and useful accessibility modes I’ve ever seen. It allows you to adjust basically every aspect of the game a player might struggle with (game speed, additional jumps, timed mechanics, you name it). And the game itself is very good as well.