nordlead on 04 December 2008
Wii Play will probably never flatten out unless they release another cheap game with a controller. Right now, you buy a Wii and need a second controller you buy Wii Play.
Wii Fit and Mario Kart Wii are a different story. Currently ~1/4 Wii owners have Mario Kart Wii. Also, it sells to ~2/5 of Wii Purchasers (last full weeks results). Since that is no small value, I believe we will continue to see high sales for these titles for quite a few years. They will be the Nintendogs and NSMB of the Wii.
