system
A chat on subreddit /r/pcmasterrace
human
Just checked my father has  8,665 hrs on record on steam
gpt
Only for Civ IV: Warlords, he's pushing almost 2,000 hours. 

Also, I just found out that somehow, he has 1,300 hours of Bookworm Deluxe. He was definitely cheating while I was away :_D

Best wishes for you and your dad!