Most Addictive Games

[TinCow]

I guess the addictive nature is best judged on how many times I replayed the game. By that standard there are a few top contendors:

1) Civilization Series (Civ 1, 2, Alpha Centauri, 3, and 4) - I have put in massive amounts of hours on every single one of them. Easily the top time consuming game series for me.
2) Baldur's Gate Series. I've probably played both BG1 and BG2 half a dozen times each. Possibly more for BG2. I doubt I'm done with them either.
3) Q3F - The most time I've ever spent in any online game. This later transferred over to Desert Combat and BF2, but Q3F dominated my life for a good 3 years.
4) Ultima Online - Two years of my life vanished in this one. Also the main reason I stay away from MMOs now: I've experienced the time commitment required for them and don't have the ability (or desire) to do so again.