What is the name of Part One of Pokémon Pokopia’s three-part Expansion Pass?

Part One of Pokémon Pokopia’s three-part Expansion Pass is called Bubbly Basin.

Bubbly Basin released in August 2026 as the first part of the paid Expansion Pass. It expands Pokopia with an aquatic-themed area and is associated with a free update that adds the ability to dive underwater.

The name can be confused with general descriptions of the game's water content, but Bubbly Basin is the official title of the first expansion part. The remaining two parts were scheduled for later releases, with one planned for late 2026 and another for 2027.

The Expansion Pass is separate from the game's original launch content. Players can also encounter water-related features through the update connected with Bubbly Basin, including underwater exploration and new aquatic-themed furniture and Pokémon.