You mean BEST
Then my vote goes to Zelda

Just look at BoTW is the most expensive game nintendo has ever made, and before that if i remember correctly it was skyward sword.

I dont mean that money = quality
I mean Nintendo spend more in their Best game.

It is sad that best doesnt equals sales.

So Zelda is the jewel of the crown

Just started playing Bayonetta on WiiU, I know it's not really an exclusive franchise, but it may very well be as far as the future is concerned. Certainly enjoying it so far. Though it'd take a lot for it to otherthrow Mario Kart it could definitely be a contender for second at this point.

Far out, this is so freaking hard.

The Zelda series has Ocarina of Time, one of the defining titles in video game history, plus other greats like Twilight Princess and Skyward Sword.

3D Mario brought us another such milestone in Mario 64, plus two of the best games ever created in my opinion in Mario Galaxy 1/2.

2D Mario was arguably even more influential, with the original Super Mario Bros reinventing the standards and conventions of the medium, and Mario Bros 3 and World standing as masterpieces to this day, despite being nearly 30 years old.

While comparatively young, and a lot less influential, the Xenoblade series offered one of the best games of the last generation, and while X didn't quite reach the same stratospheric standard, it still offers one of the most impressive and unforgettable game worlds I've ever experienced.

Metroid has sadly been on the rocks for some time now, but the it also has a claim to one of the greatest games I've ever played in Metroid Prime, and its successors, Echoes and Corruption, were also superb.

Quality wise? I believe it's Zeruda, no contest.

I think it's obvious what my answer is...

Kirby

Zelda

Pokemon>Fire Emblem>Super Smash Bros>Zelda for me

Shit, how could I forget Donkey Kong? Besides the original being truly iconic, DKC2 and Tropical Freeze are among the best 2D platformers I've ever experienced, and DKC, DKC3, and DKCR are magnificent also.

The generally loved Nintendo franchises are likely between Zelda and Mario, but me, probably Fire Emblem. I enjoy the strategic gameplay, different mechanics and wonderful varying characters of the series. Although I enjoy most of their IPs, except for Animal Crossing. I can't being playing those games for the rest of my life...

I think this is especially hard because a lot of the games here are the best of their genre.