I always assumed it was the face buttons, cause they seem a little loose.

Mine does the rattle too. Its not the buttons, its inside the controller.

@hotlfuzion @BlueBlurlxM Yeah I think its the gyroscope too.

@X-Factor

Congratulations on your purchase and welcome to the Wii U family!

I got mine on January, but if I had to buy a console for this Christmas, I would choose Wii U again. I hope you enjoy it too.

@BlueBlurlxM @sofaking @x-factor
Thanks. No need for me to worry then. My nephew dropped the gamepad a few minutes after it came out the box. It was a soft landing (cushioned by a thick carpet) but I wasn't sure if any damage had been done because soon after I noticed the rattling.
Another thing is that my wii remote is not working well with some wii games on the wii u. Playing Super Mario Galaxy on the wii u the wii remote cursor is sticky and keeps disappearing. This is no big deal, however.
Bought COD:Ghosts earlier today and the wii remote works fine. Loving the multi-player which is full of wii u players.
Thanks again.

@sinalefa Thanks! I'm enjoying my one game so far! And Miiverse is awesome!
@hotlfusion I really need to get Ghosts. I also need a Plus Controller to play my day trial of Sports Club.