Tesco Direct are currently doing Clubcard Boost (ie, you get £10 for £5 vouchers) on games, including Wii U stuff. They don't normally do it on gaming items, and not sure how long it'll last for, so if you were looking to spend any Clubcard points, now's the time.
I got Destiny on PS4 using £22.50 of my vouchers, spending the princely sum of £0.00, but thought people might want to buy Wii U/3DS stuff.