On which console was the first Western Pokémon Stadium game released?

The first Western Pokémon Stadium game was released on the Nintendo 64.

Pokémon Stadium appeared in Western regions as a Nintendo 64 strategy game in 2000, following a Japan-only 1998 release called Pocket Monsters Stadium. The game presented Pokémon battles in three-dimensional arenas rather than the overhead, sprite-based style of the Game Boy role-playing games.

Its gameplay focused on turn-based battles, Cups, Gym Leader Castle challenges, and minigames. A bundled Transfer Pak let players connect Pokémon Red, Blue, and Yellow cartridges to use compatible Pokémon in the Nintendo 64 game.

The Japanese naming history causes some confusion: the Western Pokémon Stadium was known in Japan as Pokémon Stadium 2, because it followed the earlier Japan-only title. The console itself was Nintendo’s 64-bit successor to the Super Nintendo Entertainment System and was known for 3D-focused games.