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Introduction
This Tomodachi Life island customization guide teaches you how to shape every inch of your Mii paradise. For the first time in the series, you can terraform the land, place buildings anywhere, and design outdoor spaces. Your island is a blank canvas.
Understanding island customization helps you create the perfect environment for your Miis to live, love, and cause drama. By the end of this guide, you will know how to build beaches, mountains, neighborhoods, and landmarks that make your island unique.
What’s New in Island Customization for 2026
The original Tomodachi Life on 3DS had a fixed apartment building and limited outdoor areas. Living the Dream completely overhauls island design.
| Feature | 3DS Original | Living the Dream (2026) |
|---|---|---|
| Terrain shaping | None | Full terraforming (raise/lower land) |
| Building placement | Fixed locations | Anywhere on the island |
| Outdoor decorations | None | Trees, flowers, paths, fences, lamps |
| Beach customization | No | Sand shape, palm trees, umbrellas |
| Water features | None | Ponds, rivers, fountains |
| Building exteriors | Pre-set | Custom colors and designs |
These tools let you create a tropical resort, a mountain village, a modern city, or anything in between. (For more on creating Miis to populate your island, see our Tomodachi Life Mii creation guide.)
Getting Started with Island Customization
How to Access the Island Editor
- From the main game screen, press X to open the menu
- Select Island Design (palm tree icon)
- Choose from:
- Terraform – Change land height and water
- Buildings – Place, move, or remove structures
- Decorations – Add trees, flowers, paths, etc.
- Paint – Change ground texture (grass, sand, stone, dirt)
Basic Controls
| Action | Button |
|---|---|
| Enter design mode | X |
| Rotate camera | Right stick |
| Zoom | ZL / ZR |
| Place item | A |
| Delete item | B |
| Change brush size | L / R (for terraforming) |
Terraforming – Shaping Your Island
Terraforming lets you raise and lower land to create hills, valleys, cliffs, and water features.
Terrain Tools
| Tool | Effect |
|---|---|
| Raise | Increase land height (creates hills) |
| Lower | Decrease land height (creates pits or water) |
| Flatten | Smooth area to current camera height |
| Water | Create ponds, rivers, or lakes |
Terraforming Tips
- Start with a rough sketch on paper before digging
- Build cliffs around the edges for a natural look
- Create a central mountain as a landmark
- Add rivers that flow from high to low areas
- Leave flat areas for buildings and farms
You can undo any terraforming action. The game saves your island layout automatically when you exit the editor.
Building Placement – Where to Put Everything
You can place the following buildings anywhere on your island:
| Building | Purpose |
|---|---|
| Mii Houses | Homes for your residents |
| Town Hall | Island management |
| Shop | Buy items, clothes, food |
| Restaurant | Dates and meals |
| Amusement Park | Mini-games and events |
| Beach | Swimming and sunbathing |
| Park | Social gatherings |
| School | Children’s education (off-screen) |
| Hospital | Healing sick Miis |
| Observation Tower | View the entire island |
Building Placement Tips
- Group houses together to form neighborhoods
- Place the shop and restaurant near the center
- Put the beach on the coast (naturally)
- Hide the hospital on a hill for a “clinic” vibe
- Create a downtown area with shops and entertainment
You can move buildings at any time for free. Experiment with different layouts.
(For managing your growing population, see our Tomodachi Life 70 Mii limit guide.)
Decorations – Adding Life to Your Island
Decorations make your island feel alive. You can place hundreds of items.
Decoration Categories
| Category | Examples |
|---|---|
| Trees | Palm, pine, cherry blossom, apple |
| Flowers | Roses, tulips, daisies, sunflowers |
| Paths | Stone, brick, wood, dirt |
| Fences | Wood, iron, bamboo, hedge |
| Lighting | Lamps, lanterns, streetlights |
| Furniture | Benches, tables, signs, fountains |
| Special | Statues, flags, balloons, pinwheels |
Decoration Tips
- Line paths between buildings for a planned look
- Add trees around houses for shade
- Place benches near the beach for watching sunsets
- Use different ground paints to create fields or plazas
- Change seasonal decorations (holiday lights in December)
Decorations do not affect gameplay, but they make your island more photogenic.
Building Exterior Customization
Each building can be customized with different colors and themes.
How to Customize a Building Exterior
- Go to Island Design > Buildings
- Select the building you want to change
- Choose Customize Exterior
- Pick from:
- Wall color (20+ options)
- Roof color (20+ options)
- Door style (5 options)
- Window style (5 options)
- Theme (cute, modern, rustic, futuristic)
You can customize each Mii house individually. This helps distinguish residents’ personalities.
(For creating matching outfits for couples, see our Tomodachi Life relationships and marriage guide.)
Real-World Applications
Scenario A: Tropical Resort Island
You want a vacation paradise. Set ground paint to sand everywhere. Add palm trees, tiki torches, and thatched-roof buildings. Place the beach in the center. Add a large pool (water terraforming). Your Miis will live in perpetual summer.
Scenario B: Mountain Village
Raise the center of your island into a tall mountain. Place houses on the slopes connected by winding paths. Add pine trees and stone fences. Put the observation tower at the peak. Use stone ground paint for a rustic look.
Scenario C: Modern City
Flatten most of the island. Use concrete ground paint. Place buildings in neat grid patterns. Add streetlights, benches, and fountains. Use sleek, modern building themes (glass and steel). Create a central park with grass and trees for contrast.
Common Island Customization Mistakes
Mistake #1: Terraforming too aggressively. Drastic changes can make buildings look out of place. Make small adjustments over time.
Mistake #2: Blocking paths. Ensure there is always a walkable route between buildings. Miis cannot climb cliffs.
Mistake #3: Over-decorating. Too many items can slow the game and make navigation confusing. Less is often more.
Mistake #4: Ignoring the coast. The beach is a prime location for relaxation. Develop it with umbrellas and lounge chairs.
Saving and Sharing Your Island
Your island layout saves automatically. You cannot directly share your island design online, but you can:
- Take screenshots (press the Capture button)
- Share local wireless with a friend (requires both to have the game)
- Recreate someone else’s design from screenshots
(For local wireless sharing, see our Tomodachi Life local wireless multiplayer guide.)
FAQ About Island Customization
Can I change my island’s name after starting?
No. The island name is permanent. Choose carefully when you first start the game.
Does terraforming affect Mii behavior?
Yes. Miis prefer flat, open areas. They avoid steep cliffs and deep water. Keep main pathways flat.
How many decorations can I place?
The game has a soft limit of 500 decorations. After that, performance may slow. The game warns you when you approach the limit.
Can I undo terraforming mistakes?
Yes. The editor has an undo button (ZR). You can undo up to 20 actions.
Conclusion
This Tomodachi Life island customization guide has shown you how to design your perfect Mii paradise. Use terraforming to shape hills and water. Place buildings strategically. Add decorations for personality. Customize exteriors to match your theme.
Your island is a reflection of your creativity. Experiment freely. Change things often. And enjoy watching your Miis explore the world you built.
Next steps: Learn how to share your island creations with friends using our Tomodachi Life local wireless multiplayer guide. For managing your growing population, see our Tomodachi Life 70 Mii limit guide.
