I basically only play PC games during the weekend every now and then and for a few hours. I've been playing the Witcher 3 since shortly after it came out and sometimes it takes me a little while just to remember how to play and what's going on. I finished all the side quests I could find and am (I think) getting close to finishing the main quest.
I also played the single player missions in Starcraft 2 Legacy of the Void and am on the epilogue.
Only playing a few games got me thinking about all the ones I'm missing and I just bought Batman Arkham Knight, Deux Ex Mankind Divided, and Fallout 4.
Seems like all these games take a significant time investment and they really immerse you into the story and have somewhat complex gameplay mechanics. Do you think it's too much to have all these games installed ready to play? Do you usually completely beat and explore 1 game (like the Witcher 3) before moving on to another or do you jump between games?