The great thing about ZombiU is that it can be found very cheaply, especially online. Though it's often reduced on the eShop, it can be picked up for about $10 / £6 with a few web searches, so is even cheaper than a number of new download-only games. For that budget price you get an intriguing, challenging and relatively scary retail title on the Wii U, even if it's no longer eligible for the 'exclusive' tag.
So, that's one affordable entry in the current-gen back-catalogue that's worth considering for those seeking new Wii U and 3DS games over the rest of this year. Let us know which titles you recommend of this type, and we'll be making more suggestions in the weeks to come.