http://www.joystiq.com/2006/10/19/zelda-twilight-princess-for-gamecube-is-no-more/
Not only do you have to buy a console to play it, but you have to play it with a wiimote which is not how it was originally designed.We are gathered here today to mourn the loss of The Legend of Zelda: Twilight Princess for the Nintendo Gamecube, we hardly knew ye.
Joystiq has confirmed with numerous Gamestop and EB Games retailers that the Gamecube version of the newest Zelda offering has been removed from their computer system. Their websites have also been updated to reflect the change. We have yet to receive any official word from Nintendo, but all signs point to this as a done deal.
Get out the pine box and some nails, prepare to bury your Gamecube. It's over. The Gamecube is dead, long live the Wii.
Unless -- Nintendo announces they'll offer Zelda:TP from their online outlet like they will in Japan.