I sold my 3DS to save up for a WiiU

[okr]

Make sure to get Trine 2. It's 30% platforming, 70% puzzles, only $ 15 and one of the most beautiful 2D games I've ever played (only rivaled by other beauties like Muramasa). Owners love it, which you can see when you check its Miiverse community - probably Wii U's best feature. You won't regret it.