Super Smash Bros. will be playable with GameCube controllers on Wii U using a newly revealed adapter.
The GameCube Controller Adapter was revealed at the end of a video published Thursday promoting the official Super Smash Bros. Invitational tournament scheduled for E3 next month. Nintendo of America's Twitter account followed up with an official confirmation and a picture of the device.
The adapter has ports for four GameCube controllers, and it appears to connect to the Wii U system by plugging in to its two front USB ports.
The controllers were originally used with Super Smash Bros. Melee. Though Super Smash Bros. Brawl offered a variety of control options using the Wii Remote, Nunchuk, and Classic Controller, Wii's built-in support for GameCube controllers emerged as the fan favorite. Wii U does not natively support GameCube accessories.
Nintendo has not confirmed whether any other Wii U games will be playable using the adapter, or when and how it plans to sell the adapter.
The Nintendo 3DS edition of Super Smash Bros. is scheduled for release this summer, while the Wii U version will launch this winter.