Super Mario Galaxy on Wii U has been rated by America’s ESRB.
The ESRB’s listing, found here, has rated the title E for everyone.
Super Mario Galaxy 2 is already available on the Wii U’s Virtual Console. We’ll let you know when more is known on the availability of Super Mario Galaxy.
Update: Australian Nintendo authority Vook of Vooks.net reminds us that the title is already available on the Wii U in Japan:
— Daniel Vuckovic (@VOOK64) December 15, 2015