What's the most addicting game you have ever played?

[DeathsHand]

World of Warcraft by far... My first MMORPG... Bought it the day it came out.

Basically for 6 months, if I wasn't at work or asleep, I was playing WoW...
After that 6 month period, I still played quite frequently... And, although I've cancelled and restarted my account twice, I am still playing it today...

To top it off, it basically killed 90% of my interest in any other game... I can hardly call myself a gamer anymore...

Thank you, WoW...