What third party has been the most loyal to Nintendo this generation?

[jalsonmi]

Ubisoft did at the very least publish a great Wii game--No More Heroes.

Indeed, if you want to go with Third Party Developers, not publishers, I'd say the most loyal developer for the Wii has been Grasshopper. Suda goes somewhat slowly, but he's already delivered his best game yet for the Wii (NMH) and is gearing up for at least one more (Fatal Frame IV), if not, if rumors are to be believed, a good handful more (NMH2, the crazy Suda/Kojima project, etc.).

But otherwise it's hard to say. Sega has given the Wii bad games but hasn't shut them out of good/major games either, and are going to be publishing Mad World. Capcom hasn't delivered crap, but won't be making RE5 for the Wii (before there's uproar, yes, it probably couldn't be done on the Wii regardless. It might be too powerful) and kind of half-assed the Okami port. However they've also given us one great port and some good games overall, and we will be getting Street Fighter 4. So that's good.

So I guess I'd say Capcom. I give EA no credit for giving the Wii the big franchises--theyt're contractually obligated by their affiliates to do so.