Fallout 4 is the only one, but with 400+ hours of content plus the inevitable DLC and then mods that's all I need. Well, that and all my Steam games I have not yet played or have barely touched. (Speaking of which, has anyone released a good no-suck mod ofr Aliens vs Predator?) And Fallout New Vegas with the full Project Brazil and The Frontier mods. The good news is that after I upgrade my GPU to an R9 390 and install the second SSD I've already got, I shouldn't have to spend any more money on my three year old PC to play all this.
EDIT: Among others, I still have Amnesia: A Machine for Pigs, Bioshock Infinite, Borderlands 1 & 2, Crysis 2, Deus Ex: The Fall, Dirt 2 & 3 & Showdown, Dishonored, Morrowind/Oblivion/Skyrim, Far Cry 4, Grim Fandango Remastered, Interstellar Marines, Witcher 1 & 2, & two Wolfensteins. Getting excited about games is something on which I'm trying to get a handle.