Wii U USB Helper is a free tool which allows you to easily backup your 3DS and Wii U gamesYou can play them on your WiiU, 3DS or even your computer thanks to the included emulators!
Wii U USB Helper (Windows edition only) is compatible with:
USB Helper is packed with nice features!
Here are a few things you can do with it :
-Enjoy up to 40x faster downloads than on a regular 3DS or Wii U!
-Play Wii U and 3DS games directly on your computer!
-Install GameCube games on your Wii U and play them with the GamePad!