Steam; not a lot... like, barely recorded because fuck broadcasting I'm playing.
Stand alone... A shocking amount - 5 years of ~18h a day due to support & other B/S. Easily had a 20/1 ratio of playing vs ingame admin crap at the time. NFI how much time has been eaten fucking around in SP, far too many hours.
Kinda funny when you can look back at the "if Skul left..." jokes. Just as well my ex was a smod or she wouldv'e sacked me IRL lol.
(BTW the 18h a day thing isn't a joke - people thought I never slept due to how much admin time I had daily)