Last one F.E.A.R. 2 and 3

I have 2-4 running fine on my machine. Given, I made this about 4-5 years ago, but it's running Win7 x64 and whatnot, so I think it's modern enough.

And I'm not sure why you listed Skyrim, Oblivion, DX:HR, and the Fallouts since they all play really really well with modern systems and aren't crappy console ports. Heck, if anything they're superior simply because they (barring Human Revolution as far as I know) encourage modding whatever you want for them. I love New Vegas more than 3. Although, I haven't done much with Oblivion, Skyrim is a ton of fun with loads of mods one could install and mess around with.

Buy them on PC. Elder Scrolls and Fallout have the advantage of better support by the cmmunity, both in terms of bug fixing and modding. And Deus Ex HR is pretty good, as well.

How about From Dust on PC is it fixed from what I heard it was broken at first

I don't know, ever played the F.E.A.R. series.

I highly recommend the first one on Steam (if you are used to Steam) I heard people went as far as saying this is the game Doom 3 should have been