Build Underwater Cities in Pokemon Pokopia This August
A free update in August will let Pokemon Pokopia players build entire towns on the ocean floor, while the game's first paid Expansion Pass kicks off with a new underwater area called Bubbly Basin.

"This mechanic goes far beyond simply swimming or diving for rare resources, and it introduces full-fledged underwater construction," was how the June 9 Nintendo Direct framed Pokemon Pokopia's biggest post-launch addition so far. Players will be able to build entirely submerged structures, aquatic homes, and deep-sea habitats when a free update adds the Dive move this August. For a life-sim that only launched a few months ago on Switch 2, that's an ambitious expansion of the core fantasy, and I'm excited to see a cozy building game lean this hard into something so visually distinct.
The Dive update is free for all players and scheduled for August 2026. It opens up the ocean floor as a buildable space for the first time, turning what was previously just scenery into a full construction zone. Game Freak and Koei Tecmo, the co-developers, indicated that more details on specific underwater mechanics will arrive closer to launch. Even without the paid content, every Pokopia player gets access to a new layer of their islands.
Bubbly Basin and Beyond
Nintendo also revealed a three-part Expansion Pass during the same Direct. Part 1, called Bubbly Basin, arrives alongside the free Dive update in August and adds a new town, exclusive furniture, fresh tools, and new Pokemon to encounter. There's a catch, though: players need to complete the "Raise the environment level!" request in Bleak Beach and learn the Dive move from the free update before they can access Bubbly Basin. Gating DLC behind progression isn't unusual, but tying it directly to the free update is a smart way to make sure everyone engages with the underwater systems before paying for more of them.
The Expansion Pass itself is available to purchase now, as of June 9. Parts 2 and 3 will follow later, with Part 2 promising "additional new features" in late 2026 and Part 3 adding another entirely new town sometime in 2027. Nintendo confirmed the three parts cannot be bought separately, so you're committing to the full roadmap or nothing. I'm not thrilled about that structure. Forcing players to buy a bundle that won't fully deliver until 2027 asks for a lot of trust this early in a game's life, especially when Part 2's description is as vague as "additional new features." Pokopia has earned goodwill quickly, but a little more transparency on what those later parts actually contain would go a long way.
Separately, a version 1.1.0 patch also went live, bringing a substantial list of quality-of-life improvements and bug fixes. Highlights include new conversation variations between Pokemon, increased placement limits for electricity-conducting items (doubled from 512 to 1,024), and a fix for a bug where Ludicolo could appear in two towns simultaneously and then vanish from both. The Eeveelutions now sleep at the edge of sofas like Leafeon already did, and Ditto's mid-air transformation controls got smoothed out. It's a dense patch that touches everything from multiplayer request prompts to clearer quest dialogue in Bleak Beach and Withered Wasteland.
Pokopia carving out underwater building as its first major content push is a strong move. Most life-sims expand outward with new biomes or seasonal events; going vertical into the ocean is a far more interesting direction. If the construction tools are as flexible below the surface as they are above it, August could turn Pokopia from a charming Switch 2 launch title into something with real staying power. The free Dive update and Bubbly Basin DLC both land in August 2026, with the full Expansion Pass available for purchase now on the Nintendo eShop.
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Written by
Nathan LeesGaming journalist and founder of XP Gained. Covering patch notes, breaking news, and updates across 160+ games.
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