Any game on any Nintendo console.

Pokemon Emerald i've beat it like 100 times and so far its the only pokemon game where I completed the pokedex.

SNES - Super Mario World
N64 - Zelda: Ocarina of Time
GC - Metroid Prime, F-Zero GX or Zelda: Wind Waker (can't decide)
Wii - Zelda: Twilight Princess
GB - Pokemon Yellow
GBA - Golden Sun 1 and 2
DS - Fire Emblem: Shadow Dragon  

Pokemon Soul Silver

Well that is a very tough one.

Wind Waker is the game I feel the most nostalgia for. It's timeless beauty and huge mysterious world make it one of a kind, and a game that I really really care about. That sounds incredibly melodramatic, but no other game captures my youth like this one. I remember playing it for hours and hours.

But then there is Metroid Prime/Super Metroid- These games are both better than wind waker, and I enjoy playing them more. They don't hold quite the place that Wind Waker does, but they are very close.



It's hard to choose.

Probably Wind Waker or Skyward Sword.

Nintendo Game Or Third Party Games Too?

NES: Mario Bros 3/Mega Man 2
GB: Pokemon Blue
SNES: Kirby Superstar/Mega Man X
N64: Super Mario 64
Gamecube: Legend of Zelda: Wind Waker/Resident Evil 4
GBA: Metroid Fusion/Astro Boy
Wii: Super Smash Bros Brawl

Super Mario 64

Currently, however, it's ZombiU

It's too hard to chose really. I could never pick a favorite Nintendo game.

pokemon....