Before the steam era, I played years of:
Age of Empires 2
Cossacks
Sim City 4
The Guild
Anno 1502
Elder Scrolls IV: Oblivion
Medieval II: Total War
Europa Universalis III
Mount & Blade
(more or less in this order, most of them I still play)
Yeah schooltimes, you have a lot of time!
I have no steamversion of Warband, so I can't count the hours here. But I don't play any more computer games so excessive since 5 years.