What is the title of the first Pokémon Pokopia expansion-pack part?

Bubbly Basin is the first part of the Pokémon Pokopia expansion pass.

The expansion pass is planned as a three-part paid content program. Bubbly Basin released in August 2026, while the other two parts were scheduled for late 2026 and 2027 respectively.

The downloadable content expands Pokopia after the main game’s March 2026 release. The official support information describes additional features for developing the player’s Pokémon utopia, while the game’s later updates also add aquatic exploration and related content.

Bubbly Basin should not be confused with the game’s free updates or with the full Pokémon Pokopia title. It is specifically the first named installment in the paid expansion pass, making its title the key identifying fact.