A new GameCube and Wii emulator has appeared for iOS. DolphiniOS, a project from developer Oatmeal Dome, can play some games at full speed, including Super Mario Sunshine and Super Mario Galaxy 2. The project is still in the early alpha stage of development, so it will only become more stable as development continues.
https://www.notebookcheck.net/DolphiniOS-is-a-promising-GameCube-and-Wii-emulator-for-iOS.447274.0.html