excluding Wii Sports.

First of all it will almost certainly be a Wii or DS title.

I can't see NSMB catching Nintendogs.

On the Wii - Wii play may not be caught by Wii fit due to the release of Wii Fit+

Wii Fit+ will be huge but unlikely as big as the original.

Mario Kart wii will top 20 million but I can't see it catching Wii play.

WiiNSMB, SMG2, new Zelda will all be 8 to 10 million sellers, maybe a wee bit more but not much.

So for me the title will go to Wii Play.

It won't be a PS3 or 360 game that for sure.

why not? just because of the greater installbase of the Wii? naa
if we only pay attention to the HD consoles, i'll say FFXIII could sell a lot, but i think GT5 will sell better.

Wii play or Wii fit , that isn't sad

Every GTA game no Matter what quality sells well.
If GTA 5 is like GTA:SA it could sell 20+ million combined

neither FFXIII or GT5 will get close to Nintendogs, Wii fit, Will play, Mario Kart Wii....some of these games will be approaching 30 million when all is said and done.

xbox360- halo 3 at a little over 10m
ps3- GT or FFXIII
wii- wii fit or wii play. one of those two

Wii Play bundled with Wii Remote.

do we get hardware/ software updates every thursday/whensday or is it spread throughout the week?

I would have to say Wii Fit is going to win, out of the games I know of right now. Then again, I'm sort of including Wii Fit + in Wii Fit.

I think you're underestimating New Super Mario Bros. Wii though. 8-10 million? Really? It will sell at least 3 million first month. Since it's releasing around christmas, and has very little competition, it will probably do more. I simply cannot see it stopping at under 15 million in the long run. It even has a chance of 20m+.