I wasn't addicted to it, but I played it a fair amount (over 237 days, I averaged 78 minutes of play a day). I quit the game because my friends and family did, for some odd reason, think I was addicted to it. I didn't really care a lot (but I started playing a bit less), but when all my friends (not the same who called me addicted :P) quit, the game simply lost its fun factor.
Now Kakuro, that is an addictive game.
http://www.vgchartz.com/games/userreviewdisp.php?id=261
That is VGChartz LONGEST review. And it's NOT Cute Kitten DS







