Best game by Nintendo

Metroid!!!!
On every console Metroid beats other Nintendo games.
(YES! if N64 have Metroid game it probabladlyr beats Ocarina of T)
(by "Nintendo games" I mean games made only by N)

Zelda series by far. Ocarina of Time, Twilight Princess, both managed to impress me despite having played so many other games before hand.

Oh, and Pokemans.