WoW 400+ days
LoL 70 days
FFX and FFVIII 20 days
Koei games 30-70 days?
Age of Mythology, Medieval Total War, Rome Total War, Civ 3, Crusader kings 2, Stronghold crusader, C&C games 100 hours each.
Definitely cutback recently, but games can easily be replaced by tv shows, books, youtube videos, etc.
For example I have watched over 150 hours of One piece and Bleach.