Oyvoyvoyv on 30 January 2008
Pokemon Red/blue, no doubt. might be 350 hours...
Then SSBM, Pokemon Red, Twilight Princess, James Bond Nightfire and Mk64 all are 100-200
http://www.vgchartz.com/games/userreviewdisp.php?id=261
That is VGChartz LONGEST review. And it's NOT Cute Kitten DS