Ooh if talking games of yesteryear (No logging) I would Say Tribes & Tribes 2 took 1000 hours+ each also not to mention Joint Operations back in the 3gig cap days.
I remember convincing my boss to get original Tribes installed on my desktop at work for after hours game play (Pre ADSL days). He ended up playing more than we did. Going home at 11 -12pm was the norm, and how he stayed married only he knows.

