The lights are on
New Super Mario Bros. U is a great game, but we can't stamp a score on it quite yet.
We played through the entire game, but the Wii U itself still needs an online update that will be ready for the system launch this Sunday. Until this update happens, any online functionality for New Super Mario Bros. U is simply not working. Nintendo could activate the update today, tomorrow, or Saturday. It's still up in the air. So until then we'll all just have to sit around and wait.
In the meantime, you should know that the offline parts of the game (which is probably 99 percent of it) are way awesome. You can also check out tons of Wii U and Mario content on our hub.