No, it was only made for Wii and anyway the graphics are way too advanced for the Gamecube. Sorry
yes
no because there is no system on gamecube which can play any other disks which r not gamecube
no but you can download it.
yes it does! go to this website to buy an online thing for gamecube http://www.nintendo.com/consumer/systems/nintendogamecube/index.jsp scroll down