Nintendo had a whole room dedicated to both tournament games and games on the Nintendo eShop, and among the Wii U games to come, Q.U.B.E. Director's Cut was playable, at least on the later days of the convention. Unfortunately, we were unable to get our hands on directly with this game, but we do have a short gameplay clip that we can share of someone who was playing through the demo.
Q.U.B.E. is currently available on PC, while Director's Cut is expected for release sometime this year or early next year for Wii U and PlayStation Network.