Yesterday, a user on NeoGAF had a weird experience when he was able to access what looked like a debug menu for Nintendo's new Miiverse service. Completely by accident.

As he poked around and found he couldn't do much of anything, theories arose that he'd simply accessed a dummy or shell menu, which have been confirmed by Nintendo today, who say the only thing he'd accessed was a "mock up".

"It has come to our attention that some people were able to access a mock-up menu on Miiverse following the launch of Wii U in the U.S.," a Nintendo rep told Kotaku earlier today. "Please note that this was only a mock up menu and has now been removed and is not accessible."

We'll have more from Nintendo on the state of the Wii U's launch tomorrow morning.