I would guess around a million during the first week in all territories combined, but Super Mario Galaxy taught me how unpredictable this stuff can be. The same patterns seem to work with both of the HD consoles, but big Wii games tend to launch smaller and have loooong legs.
Don't know if it's due to Nintendo being more conservative with shipments after the slow days of the Gamecube, or just that the more casual audience is less concerned with getting every game on launch day, but that's definitely how sales on the Wii seem to be going.







