"There’s a joke going around in Japan at the moment about using Off TV Play to play your Wii U games on the Bullet Train, as long as you get one of the seats with a power outlet, so we wanted to make sure Bullet Train play was possible with Revelations." - producer, Tsukasa Takenaka
Off-TV play really is one of the big killer-apps for the Wii U. Glad to see more and more games supporting it. I find myself using that mode to play much more often. Sometimes it's really nice to be able to plop down in a comfy chair, pop on some headphones and just immerse yourself.