It's a shame that the gamecube controller adapter for the Wii U can't recognize a GBA when its connected. Heck the Bongos can work this way on a Wii U, but there understandably is more going on with the GBA connected, so I get why they can't connect. Seriously, the proper 4 Swords experience along with a few other Gamecube titles that can connect with a GBA, is the only reason I keep my OG Wii around, since otherwise my Wii U can do everything my hacked Wii can do, and then some.