Ever?

Ultima Online hands down. Starting in 97 up until as recently as 2011 off and on. Mostly on. I couldn't begin to guess a close real time on, but many, many thousands of hours.

edit; thinking about it a little more, I am in the 10k+ hour club on UO.

Madden or GTA

Yep, last time i seen i think i had 700 days played or somethign stupid like that lol

imma log in and check since its free now days

Halo 3 by far. Followed by Halo 2. Those were the days.

Betrayal at Krondor, Heroes of Might and Magic III, Fifa 2002

You MMO guys make me feel better about myself and the productivity I've sacrificed for gaming.

1. World of Warcraft

2. Diablo 2

3. Team fortress 1 the classic

Battle Field 3

Madden 03 probably by far. Maybe NFL 2K5.

it was 588 days lol, i thoguht it was more, still way way to much. I just got completely lost in the game.

Good God. This.

I think the game I spent the most time on was Modern Warfare 2. I had just bought a 360 after a 3 year gaming hiatus and it was the only game I owned for a good year before I bought Red Dead Redemption from a friend. As someone mentioned, it was a substitute for cable for me. I could never watch TV so if I was home it was either Duty or browsing the web.

Last I checked I had logged 18 days on that damn game.

I don't even want to think about total time played on MMOS/Games in general in the past 16 years. Pitiful really.

This. Going to be so hard when #4 comes out.

Ultima Online.

Non MMO, Final Fantasy Tactics. I have multiple save files that have the 99:99:99 timer on it.

1) everquest. From 1999 to 2007 and then 2009 to 2010. Prolly400+ total days.
2) vanguard.
3) call of duty mw2\