Twilight Princess for Wii has yet to do a week under 30k, and it has been out for 58 weeks or something. Soon it will fall under, but TP isn't as big as SSBB, since it didn't have the same install base, and it was considered to become the only good game on a "flopping" console. SSBB is one of the greatest on the best selling console. Not going under 30k might be possible.
SSSBM however, only lasted 13 weeks before going under 30k, or does this graph only have Japan?
http://vgchartz.com/swlaunch.php?reg1=All&game1=Super+Smash+Bros+Melee+-+GC®2=All&game2=®3=All&game3=&weeks=100&weekly=1
http://www.vgchartz.com/games/userreviewdisp.php?id=261
That is VGChartz LONGEST review. And it's NOT Cute Kitten DS







