We need actual times so we can judge you.
I see how it is.
Euro Truck Sim 2 - 34 hours, Path of Exile - 108 hours, Quake Live - 28 hours, TW: Shogun 2 - 13 hours.
Those aren't big numbers, mehh
Age of Empires would eclipse all that though, been out for nearly 18 years. Similar with Dawn of War, which I recently decided to get on Steam using my key. Sadly didn't work for Dark Crusade though =(
As for Team Fortress, I play it often but get bored after one match.
Vindictus is something that's tickled my fancy recently, probably clock up some hours on that.