On what date was Pokémon Stadium released in Japan?

Pokémon Stadium was released in Japan on April 30, 1999.

The game was made for the Nintendo 64 and brought Pokémon battles into a 3D arena. Rather than serving as a direct replacement for the Game Boy role-playing games, it focused on competitive battles, tournament modes, and presentations of Pokémon attacks in a polygonal environment.

The Japanese release is notable because the original version supported a smaller selection of Pokémon than many international players expected. The later international release, based on an expanded version, included all 151 first-generation species. Players could also connect compatible Game Boy Pokémon games through the Transfer Pak, allowing Pokémon to appear in the Nintendo 64 title.

Nintendo promoted the game through Pokémon Festival '99 events in Japan. Pokémon Stadium helped establish the visual style and battle spectacle later associated with console Pokémon experiences, even though the core series continued on Nintendo handheld systems.