Zii? Like "Wii" with a "Z"? Japan's Nintendo Co Ltd filed a trademark on October 30, 2009 for "Zii".
The trademark recently popped up on the Japanese trademark database.
The filing, which covers video games and electronic devices, contains little information. Wonder what it could be...
Update: Looks like Nintendo is attempting to block the branding of the Zee EGG in Japan.
What Is The Nintendo Zii? [Siliconera]