Snap!

The first Pokémon Pinball. As a fan of Pokémon and maniac of pinball machines in general, I love the game. It combines both things... and the result is absolutely great. It's pure greatness. As a pinball game, is deep, fun and challenging. But you also catch Pokémon, make them evolve, and complete the dex. Bonus stages are awesome too.

Yeah, definetely this one. The rest (Stadium, Colosseum, Snap, Channel, Dash, Mystery Dungeon, Ranger, etc..) are kind of lacking in different aspects, even if they are not bad and/or have an interesting gameplay going on.

Ranger S2

Ranger is the clear winner, it's just amazing how they managed to change the mechanics in the Pokémon universe !!

Either ranger or mystery dungeon

Pokemon Snap

I absolutely loved Pokemon Pinball on the GB, someone gave it to me as a gift and I though, what is this fanservice shit? Then I started playing and it was like crack to me lol

I dont know if its the best, I guess Colosseum, snap or some on the mystery dungeon franchise gets that title until Pokken comes but I just want to express my love for it

Mystery Dungeon Explorers of darkness/time/sky
Ranger is very underrated too.

Pokemon Puzzle League! I used to play that so much when I was a kid.

Pokémon Snap!

Also, never like stadium that much, it was fun and had entertaining mini games. But it felt so limited. All you could do if I remember correctly is pick a team of pokémons and fight. You could'nt even chose the moves they had.