You will first download the games on your PC, copy them to your Wii U SD card, then boot a program on your WiiU which will install the games onto your Wii U USB drive from your Wii U SD card. As such you will require the following before you begin: - A Wii U on firmware version 5.5.1 - An SD card large enough to store at least one game (they range from 500 MB to 16GB but a 16 GB SD card should be enough to accomidate the largest games). - A Large USB Drive formatted on your Wii U (I am using a 250GB USB drive). - Internet access for your PC and WiiU.