Every bad RPG gives you greater appreciation of the good ones. But still, my contribution is pretty much any storyfag "RPG" that doesn't actually qualify as an RPG in my book. Bioware games, CDProjeckt games & certain storyfag JRPGs namely. They owe me money and time.
Also ones traditionally gameplay-centric and prestigious that became dumbed down in the modern age such as modern "immersive sims" (DX:IW, Bioshock, Dishonored) and Bethesda-style shit (Skyrim, Oblivion, The Outer Worlds).
Fallout 3 is somewhat gameplay-centric and enjoyable on some level but everything else about it (writing, visuals, level design, OP vats) is so damn bad or mediocre that it gets a dishonorable mention.
OK OK, I have one. Final Fantasy X:2. I got ripped on yeagermister and played it because I couldn't go to a rave with my buddies because my foot was still broken from a motorcycle accident.
Total fucking trash game. Even blitzed.
I actually like this game, somewhat. One of the last gameplay-centric Final Fantasy games. It's not a great game, definitely declined, but shortly after this the series gameplay became FF13-tier. Linear corridors, braindead combat, boring RPG systems, minimal to no secondary yet standard RPG elements (puzzles, exploration/navigation, mini-games etc).