Imperia Online took a good chunk of my life for a while until I rid myself of the habit.
Ikariam also took a while.
Civ-Online was good.
You are right, this is one of the most important points and I wanted to speak about it. And the interesting part is that it is also online on many websites. I search for them online and found this, hope you will find it helpful. Imperial Ages was epic with my clan back then, we got to be the top alliance in multiple servers! 
(Google has the most updated urls if you just search these names)
Oooh! Imperia online started it as well but wasn't able to follow through because I got busy. My impression of the game was good but is it worth investing time on it? Would like to hear your opinion of the game. Thanks.
