Any PC Game players?

I was cleaning out and tossing out old programs/OS disks and came across a few old games. Loaded up S.T.A.L.K.E.R Call of Chernobyl and have been playing it. Amazing game still... graphics are a bit ancient and the AI isn't what it is today, but it's still a fun game. I tried loading up the original Far Cry, but it won't run on the newer Windows OS.

You have any old games you still play?