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.
Wasteland 2 is an outstanding example of disappointment. I think the worst thing about it was how you never knew when you were going against a faction until they all suddenly started attacking you and you were forced to reload. Wasteland 3 was very good at least.
Personally, my most disappointing was Red Dead Redemption II. It’s a game that requires an insane amount of patience but there are so many things to do that you begin to stress about the lack of progress. And ultimately the fact you have to do everything a very specific way to satisfy the conditions of quests makes it frustrating. Everyone talks about how the world building is second to none but I guess that means you’d have to want to live in the wild west and for me I get more satisfaction installing a hunting mod in Skyrim because it’s less restrictive over what I can do and where I can go and genuinely has fast travel.
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.