All.
No, I mean, really, pretty much every game has some drawbacks.
First two Fallouts - good games, not much mods. Same goes for Arcanum.
Fallout fps'es after that - tons of mods, but actually spending a week to set it all (up to 256 modules, i.e., mods and vanilla) up so it works together is really, really nasty affair. I sort of would like to play Fallout 3, but up to this day I have never managed to set it up, so it wouldn't crash. Same goes for tES series starting with Morrowind, have never finished any game. Last I managed to actually set up Oblivion with all those huge amounts of mods, but mid gameplay I figured that one of them is cr*p (some undead spawn mod, that was too intense and unrealistic, spawning undeads even in MC's house) and stopped playing. Same I had with Skyrim - another week down the drain to set it all up, start playing, find out another mod being utter garbage (that animal sh*tting mod, that spams a lot, a lot of sh*t, accompanied by annoying noise) and stop playing.
FtBoS I also sort of like... asides the bugs. Which were too drastic. Never completed the campaign, furtherst I got was to one of the robo levels when it had unavoidable CTD. And multiplayer had the everpresent synchro bugs.
Then, like I said in another thread, there's a lot of games that have annoying bugs that have been there for decades, nobody's fixing them. For example, Empire: Total War wall repair bug, Civ5 worker automation bug and so forth. AAA devs are the worst scum when it comes to customer support - instead of fixing existing games, they just spam out new games (that are often worse) and that's it. So yeah, if a game is good, but bug real bad - bye, bye.
What else. Games with grind. Another two edged sword, ehh. Sort of nice to have constant progression, but... humans happen to be wee bit more complicated beings. I don't know, in a late dark evening, with fireplace burning behind me and hot tea on the table, perhaps I want an actual story, not the endless grid. Mobile games seem to be the most grinding and, even more, boring grinding I have seen in my life, I have to say. I mean, like 90% or more are just boring garbage.
Old school tunnel fests. Another thing that makes me yearn for something more... immersive. I mean, just think of it, for example, how much better original Thief games would be with even more freedom of a more open world. Then perhaps I would have finished at least one.
Puzzles. I hate using walkthroughs. I want to play game, not constantly have to alt+tab to a walkthrough. Alt+tabbing is the opposite of immersive. So adventure games I pretty much can't play, since I'm far too daft for puzzles. And some older fps'es also have similar issues. Like remember Redneck Rampage, trying to figure how to finish a level? Yeah, turns out, not just me, other people are also ranting about keys hidden in dark places and similar antics. Didn't finish Star Wars: Dark Forces 1&2 for similar reasons, as I remember. The latest this sort of hardship I had was the Thief: Dark Mod, some missions there are very, very puzzley for me, but since that's more of an anthology, who cares, I suppose.
Now with fps'es, of course, this issue could be addressed, again, by making the levels more open ended. Like, multiple ways how you can proceed. But that's just my wishful thinking. Other than the puzzles I did like the games mentioned.
Then there's also the thing with atrocious customer support. I really like games as Crusader Kings 2, Stellaris and such Paradox'es big titles. But they keep the mods on their offical forums. Which are run by totalitarian socialists, a.k.a., your average Swedes. Which results in constant conflicts with my persona, since I happen to be less fond of socialism as a citizen of post-socialist country. Right now I have some sort of ban there, but they didn't even bother to send me the date of when it is supposed to end. No one ever replies to support emails either (not surprising, nowadays most corporate customer support emails are fake). I even found on FB one of their board members, but also no reply.
Sure I could just buy another account or I could just hire some representative that would go to their office in Stockholm and have a talk with them, but... it's just mentally tiring. I mean, there is actually such a huge amount of games out there and we have so short lives, so... I don't know, going the extra length to deal with some asshats over couple of good games. Maybe just not. Not sure even where are they going as a company, they marketed Bloodlines 2, still no release, shareholders likely pissed or already sold their stock, doesn't look like a bright future up ahead.
What else, what else. Too much micromanagement. For example, I like Jagged Alliance 2 (and it's many variants). But I dislike to manage many-a squads and militias around the map, just feels unfun. Of course, when I saw the JA2 speedrun video on Youtube, I realized the game is actually easy and 99% of it can be skipped if you simply want to finish it. Which made me think - why play it at all.
There was also some multiplayer JA2 patch/version/what not, but when we tried it, some stuff also didn't work for it. Maybe it's better now.
Great games with not overly much singleplayer replayability and no new releases. I suppose goes for many single player fps'es. Where's any new stuff for Blood series? Where's any new good games for Duke Nukem series? Where are any new games for the SiN series? Etc. Of course I still replayed them as is, but... I really don't know why some good franchises barely exist nowadays. At least we have the modders, thank God, some folks make all kinds of crazy remakes etc.
Good topic, btw. I hope I managed to stay on it. Maybe I'll add something more later on.