Update: We have new information on the extent of the new GameCube controller adaptor's compatibility. Contrary to the report below, it will allow GameCube controllers to function exclusively with Super Smash Bros. on Wii U. In a statement issued to IGN, Nintendo said: "The GameCube Controller Adapter for Wii U is compatible with Wii U and Super Smash Bros. for Wii U specifically – it is not compatible with any other Wii U software. The adapter is also not compatible with Wii and we apologise for any confusion." Original story follows... Today has been a good day for Nintendo fans, with Super Smash Bros. for Wii U release dates, confirmation that Captain Toad: Treasure Tracker is, well, on track for a holiday release, and now the news that your GameCube controllers will work with games other than just Smash.