Nintendo of America on Twitter: "Get excited! The #WiiU version of # SmashBros. will be playable with GameCube controllers. http://t.co/nmyj9QMsuU" / Twitter
Amazon.com: Nintendo Super Smash Bros. White Classic Gamecube Controller : Video Games
Super Mario Bros. Controllers Have Turbo So Smash Bros. Players Can Spam Fireballs - Siliconera
This Week's Purchase: Super Smash Bros. (for Wii U) with adapter + GameCube Controller | Dracula's Cave
GameCube controller - Wikipedia
Super Smash Bros. for Wii U: Controllers
Super Smash Bros. pros at Evo 'loved' Hyperkin's new GameCube-style Wii U controller | VentureBeat
Wii U Pro Controller - Wikipedia
Wii U GameCube controller adapter compatible with more than just Smash Bros. | Eurogamer.net
Performanced Designed Products LLC Wii Fight Pad Smash Bros - Mario | Walmart Canada
Super Smash Bros. for Wii U - SmashWiki, the Super Smash Bros. wiki
Super Mario Bros. Controllers Have Turbo So Smash Bros. Players Can Spam Fireballs - Siliconera
2 x Black + 2 x White Gamecube Controllers + Wii U Adapter for Super Smash Bros - Walmart.com