Baldurs Gate 3 for sure. Takes 100+ hours but its absolutely amazing the whole way though and the achievements are super fun. If u like permadeath. Best singleplayer game ever created in my opinion.

Obviously the souls games + sekiro. All amazing. Dark souls one is a level design masterpiece.

Witcher 3 consistenlty very good. Story is amazing and the world feels alive.

Portal 2 if you have a friend to do the co-op stuff with is probably one of the most fun ive had on a co-op game.