What was the Japanese title of the Pokémon Nintendo 64 game released only in Japan in 1998?

The Japan-only 1998 Nintendo 64 game was titled Pocket Monsters Stadium.

Developed and published by Nintendo, Pocket Monsters Stadium was a strategy role-playing game built around three-dimensional Pokémon battles. It was released in Japan on August 1, 1998, and used Pokémon from the Game Boy games.

The title is easy to confuse with Pokémon Stadium, the more widely released follow-up. Internationally, the later game appeared as Pokémon Stadium, while in Japan it was initially treated as a sequel and was known as Pokémon Stadium 2. The naming differences reflect regional release history rather than separate franchise concepts.

Pocket Monsters Stadium was planned for the Nintendo 64DD before being converted to a standard cartridge release. It remained exclusive to Japan, so many international players first encountered the Stadium concept through the later Pokémon Stadium release.