How to Rebuild the Pokémon Center in Pokémon Pokopia (Bulldoze, Onix & Slowpoke Humidity Guide)

TL;DR

• Reach Environment Level 3 in the Withered Wasteland and speak to Tangrowth to unlock the rebuild quest.
• Buy the Pokémon Center Rebuilding Kit from the PC Shop for 1,000 Life Coins.
• Collect 20 Lumber, 20 Stones, 10 Leaves, and 10 Vine Rope before you can begin construction.
• You need 8 helper Pokémon — one must have the Bulldoze specialty (Onix), plus Timburr (Build) and Scyther (Chop).
• Onix is trapped in a cave and can only be freed after completing the Slowpoke humidity and Rain Dance puzzle.
• Kyogre ultimately provides the heavy rain needed to soften the rocks blocking Onix.
• After leading Onix back to base, speak to Tangrowth to start the rebuild — it takes one full in-game day.

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Once you’ve built your first house and raised the Withered Wasteland’s Environment Level to three, Professor Tangrowth will give you one of Pokopia’s biggest early quests: rebuilding the crumbled Wasteland Pokémon Center. It sounds simple at first — gather some materials, recruit some Pokémon — but this quest quickly spirals into a multi-step chain involving cave puzzles, a rain ceremony, and even a legendary Pokémon. This guide walks you through every step of how to rebuild the Pokémon Center in Pokémon Pokopia.

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Step 1 — Buy the Pokémon Center Rebuilding Kit

Before anything else, head to the PC Shop and purchase the Pokémon Center Rebuilding Kit for 1,000 Life Coins. Once you have it, interact with the small box in front of the ruined Pokémon Center to view the full list of construction materials required.

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Materials Needed to Rebuild the Pokémon Center in Pokémon Pokopia

Here’s everything you’ll need to gather before construction can begin:

• 20 Lumber — Craft these using Scyther and Small Logs. Check our guide on how to get Lumber in Pokémon Pokopia if you’re unsure where to start.
• 20 Stones — Pick these up directly from the ground around the Wasteland.
• 10 Leaves — Use Cut on Tall Grass to collect them. See our full how to get Leaves in Pokémon Pokopia guide for details.
• 10 Vine Rope — Use Cut on hanging vines near cliff edges.

Alongside these materials, you’ll need to recruit 8 Pokémon to assist with construction. Three of these have specific specialty requirements:

• 1 Pokémon with the Bulldoze specialty (Onix)
• Timburr — for the Build specialty
• Scyther — for the Chop specialty
• 5 additional Pokémon of your choice

The hardest part? Onix is trapped — and getting it out requires solving a multi-step puzzle.

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Step 2 — Where to Find a Bulldoze Specialty Pokémon in Pokémon Pokopia

Finding Onix in the Cave

The Bulldoze Pokémon you need is Onix, and it’s located in the cave system just northwest of the Pokémon Center. Here’s exactly how to reach it:

1. Locate the breakable rock wall near the block that was previously leaking water. If you’ve already broken through this wall, the cave entrance will be very close to the edge of the river.
2. Break the wall and head inside, following the path forward.
3. Use Rock Smash on the brown basic rocks blocking your way until you reach a more open area.
4. Continue breaking rocks along the right side of the wall.
5. Eventually, you’ll hear a Pokémon crying out for help — that’s Onix, stuck behind a set of hard rocks that cannot be broken with Rock Smash.

To free Onix, you’ll need to make it rain — and that means recruiting Slowpoke.

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Step 3 — The Team Initiation Challenge and Professor Tangrowth

Before Tangrowth will help you figure out the rain solution, he’ll ask you to escort him to the southern part of the Wasteland near the ocean to examine a tower. Doing so kicks off the Team Initiation Challenge. Complete it, then return to Tangrowth in the main Wasteland area. He’ll realize that making it rain is the key to softening the hard rocks trapping Onix.

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Step 4 — How to Find Slowpoke and Make It Rain in Pokémon Pokopia

Creating the Seaside Tall Grass Habitat

Slowpoke won’t appear on its own — you have to create the right conditions first. Head to the southern coastal area where you found Magikarp near the fishing rod. Use Leafage to plant tall grass along the ocean edge, creating the Seaside Tall Grass habitat. Wait a short while, and Slowpoke will show up.

Befriend Slowpoke, then speak to it and ask it to follow you back to Tangrowth. At this point, you’ll unlock the recipe for Wooden Steps — you’ll need these because Slowpoke can’t jump and moves very slowly.

Building a Path for Slowpoke

You’ll need to craft Wooden Steps at the nearby crafting table using Lumber, then build a clear, unobstructed path all the way from Slowpoke’s location back to the Pokémon Center. If Slowpoke stops and gets tired along the route, it means the ground is cracked. Use Water Gun to soak the cracked ground and make it passable again.

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Step 5 — How to Increase Humidity for Slowpoke in Pokémon Pokopia

Once Slowpoke arrives at the base, speak to it to progress the quest. Slowpoke needs high humidity to perform its signature giant yawn — the yawn that triggers rainfall. While you work toward the Rain Dance ceremony with Squirtle, you can increase the area’s humidity by doing the following:

• Spray water across the floor using Water Gun.
• Create water sources like ponds and lakes in the area.
• Plant trees and flowers — use Bulbasaur to speed up their growth significantly.

Bulbasaur will also suggest creating the Field of Flowers habitat to help Slowpoke. If you’re short on Wildflower Seeds, buy them from the PC Shop for 50 Life Coins each.

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Step 6 — Setting Up the Rain Dance Site in Pokémon Pokopia

Keep talking to Squirtle and completing their requests until they mention a rain ceremony. Once Squirtle is on board, they’ll ask you to set up a Rain Dance Site habitat. Here’s what you need:

1. Speak to Professor Tangrowth about the party — he’ll tell you there are two Castform Weather Charms inside the starting cave where you first met Tangrowth. Head there and examine the wheelbarrow to collect them.
2. Craft a Wooden Plate using Lumber.
3. Place the Wooden Plate on the ground near the base and add some fruit on top of it.
4. Place the two Castform dolls on a flat wall on either side of the plate — first lay down two blocks as a surface, then attach the dolls to them.

Once the Rain Dance Site habitat is complete, bring Squirtle to it and speak to them there. Squirtle will begin the dance. Then speak to Slowpoke and have it perform its huge yawn to summon rain.

Unfortunately, the rain doesn’t last long enough to soften the blocks holding Onix. You’ll need something much more powerful.

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Step 7 — Finding Kyogre in Pokémon Pokopia

After the yawn produces insufficient rain, the group will hear a loud noise from the ocean to the south. Run down to the coast and you’ll find the legendary Pokémon Kyogre. To reach it and trigger the dialogue, place blocks on the bridge to create a path out toward the water. Speak to Kyogre, and it will unleash a torrential downpour — far more powerful than anything Slowpoke could produce.

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Step 8 — Freeing Onix and Completing the Rebuild

With Kyogre’s rain soaking the cave, head back inside and use Rock Smash on the blocks in front of Onix — they’ll now break easily. Clear a full path for Onix, then lead it back to the Pokémon Center area. Speak to Professor Tangrowth, and the rebuild will officially begin.

The game will tell you construction takes a full in-game day to complete. If you don’t want to wait, you can change the clock in your Nintendo Switch settings to skip ahead — just jump forward by 24 hours and the Pokémon Center will be finished when you return.

Want to know what other buildings and structures you can unlock? Check out our full Pokémon Pokopia Pokédex and Habitat Dex for a complete picture of what’s available in the game. You can also explore Dream Islands once you’re further along.

For more on managing your town’s progress, see our guides on how to open Area Gates and raise Trainer Rank, how to increase Comfort Levels, and how to increase Storage.

You can also grab the official game from Nintendo’s store page or visit the official Pokopia website for more information.

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Frequently Asked Questions