Nintendo unveiled Wii U at E3 in June without a single official first-party game to demonstrate it — attendees had to make do with tech demos like New Super Mario Bros. Mii and Zelda Wii U. If you were wondering why there wasn't a more concrete showing of upcoming games, it could be because Nintendo's legendary secrecy extended even to its own top employees.
Super Mario Galaxy producer Yoshiaki Koizumi revealed in an E3 interview with GameLife that he didn't get the full picture about the machine until Nintendo's E3 presentation.
As a developer at Nintendo, I had some information about the new system, but I didn’t really have all of the information prior to the announcement at our presentation. I only knew some of the things that were considered to be safe.
Koizumi knows about the console now though, and you know what that means — he and his team are working on a Super Mario game for the machine. We can't wait.