I would have to say EverQuest was the worst one for me. I never spent like 28 hours straight on one game before....sad thing was like 14 when I was playing it so I was so fickle on what class I wanted to play so I only ended up getting to level 36
. Other than that game I would have to say that Ultima 7:The Black Gate took a great deal of my life away at a very young age.