Available at Argos for £9.99
Ok thanks for the onfo.....
They can be used on switch 2ds 3ds (check yours has nfc built or not) and wii u for good few games that support it. They're not use once kind of thing but some games limit usage once per day or only unlock one thing. Sometimes it's just an extra life or supplies to new outfit depending on the game.
So is this a one use thing or does it just open up locked DLC on the Wii U game and can be used time and tiem again?