Personally there are a few games which left me very dissappointed, after hyping myself up for years in certain cases.
Divinity Original Sin: turns out I prefer more streamlined, less packed games (love Pillars of Eternity) and that coop play in a CRPG stresses me out.
Wasteland 2: I actually managed to finish this one but secretly I admit I was hoping for a better Fallout which I didn’t really get. New Vegas did the cowboy theme much better.
INSIDE: while the design was cool, it was just a ton of boring, easy puzzles in comparison to LIMBO, its predecessor.
The irony of complaining about lack of fast travel on patient gamers is great.
RDR2 is pretty much my all time fave because of story/character but I never liked hunting and never felt the need to do any of the myriad achievements. I really enjoyed the slow pace of the game, so often the main story feels so urgent it is totally immersion breaking to do anything other than immediately pursue your next quest objective. By contrast RDR2 there were breaks in the story that felt natural to chill in camp or explore randomly or side quest or whatever.