I have got to play the new Doom and Doom Eternal in different times when trying the games at someone else's house as they had rigs that could run the games (but just in those days, not extensively enough to completion for obvious reasons), while the closest I've done to playing HL2 is messing around with Garry's Mod and having played Portal 1 to completion (I did start playing Portal 2 months ago but haven't got around to that again). I did try Dark Souls 2 once or twice but definitely not enough to say that I could be sure to say "I have played DS", and everything else mentioned here I haven't ever got my hands on again.
...You know, one day you might get good chances to at least try those, let alone play them enough from start to end. But at least there's likely something else to try out with older games or anything that you can run on your PC; its just a matter to find what to try :)