Nintendo wants you to buy their games digitally. So, they've launched yet another generous eShop promo--this time, for Wii U. From now through July 28, you can receive a bonus for funding your eShop account.
Add $50 or more to get a promotional code for $5. Add $100 or more to get a promotional code for $10. You don't have to buy anything, but you simply need to add funds to your digital wallet.
You'll get an email with a promotional code on August 2, which Nintendo points out is "just in time for the Pikmin 3 release on August 4." So, if you plan on buying any upcoming Wii U games digitally, this promo may help make it a bit cheaper to do.