I admit that I have been addicted to Neopets in grades 7 and 8. Playing it for at least 2 hours after school every day was my way of relieving stress.
In grade 9, I became addicted to this MMORPG called Conquer Online. My friend told me about it. I was totally obsessed with it for a year.
Then, closer to the summer holidays I have discovered Maplestory, and also spent quite a bit of time playing it. I think I played it for at least 2 months, made a break in August, and when school started played it again for 1-2 months.
I still play Maplestory and Conquer Online occasionally. What really disappointed me about Maplestory is that I bought a pet and some clothes for real money (yes, that's how addicted I was) but then after 2 months, they were gone!
Well, I knew that was going to happen, but still... what a waste. Another thing that annoys me about Maplestory is that it often takes me several tries to log in. Other than that, it's a relaxing game. I even uploaded some of the music from the game onto my mp3 player.