How to Make Your Island Bigger and Unlock the Island Builder in Tomodachi Life: Living the Dream

A vibrant island at night with a lit-up cityscape, surrounded by fireworks and colorful confetti in the sky. The scene is festive and lively.
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By Alexandria LopezStaff Writer

A vibrant island at night with a lit-up cityscape, surrounded by fireworks and colorful confetti in the sky. The scene is festive and lively.
  • Primary Subject: Tomodachi Life: Living the Dream
  • Key Update: Unlock the new Island Builder tool and expand your land mass by reaching specific Mii population milestones.
  • Status: Confirmed
  • Last Verified: April 21, 2026
  • Quick Answer: Reach 8, 20, and 35 Miis to trigger island upgrades, then use the Island Builder tool to customize your new expanded landscape tiles.

A tiny island can only hold so much. Good thing you can make your island bigger in Tomodachi Life: Living the Dream!

As you create more and more Miis to join your island, you're going to need some space for them. That begs the question: how do you make the island bigger? It's definitely possible, but certain criteria need to be met to achieve it.

And here's how to do it!

How to Make Your Island Bigger in Tomodachi Life: Living the Dream

The island size in Tomodachi Life: Living the Dream expands as you get more Miis.

A vibrant, tropical island with a grid-like city layout surrounded by water and a sandy border. Palm trees, colorful buildings, and roads fill the island.
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Credit: Nintendo

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The first island upgrade happens when you get eight Miis living on your island. The second upgrade occurs when you get 20 Miis. The third and final stage happens when you have 35 Miis living on your island.

Once you have six Miis living on your island, you'll unlock the Island Builder. When you select Island Builder, you'll be able to see the existing landscape as well as empty areas that you can fill out after each upgrade.

Screenshot of a game interface with a grid overlay over water, showcasing building mechanics. Brightly colored houses line the bottom, conveying a playful tone.
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Credit: Nintendo

READ MORE: How to Get the Outer Space Tour in Tomodachi Life: Living the Dream

The Island Builder allows you to build new landscapes in these empty areas. You can go to the landscape tab to see your unlocked landscape. Once you select one, you can place the landscape one-by-one as a tile or cover a whole area.

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