# Nurikabe: Islands & Walls — Island logic puzzles

> Logic puzzle game partitioning grids to form islands based on numbered clues. (iPhone/iPad app by Conceptis Ltd..)

- Source: https://appshunter.io/ios/app/nurikabe-islands-and-walls/id581912445 (this page in markdown: same URL + `.md`)
- Developer: [Conceptis Ltd.](https://appshunter.io/developer/479420055)
- Category: Games, Entertainment, Board, Puzzle
- Price: Free with in-app purchases
- Rating: 4.90/5 from 399 App Store ratings · 186 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.6 · 7 MB
- Languages: American English, Korean, Chinese (Simplified, China), Japanese
- Released: 2013-01-02
- Data updated: 2026-09-01
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/nurikabe-islands-and-walls/id581912445/reviews.md

## What is Nurikabe?

Partition between clues with walls to create islands with corresponding size! Each puzzle consists of a grid containing clues in various places. The object is to create islands by partitioning between clues with walls so that the number of squares in each island is equal to the value of the clue, all walls form a continuous path and there are no wall areas of 2x2 or larger. Each island must contain one clue and be isolated from other islands horizontally and vertically.

Nurikabe are addictive island-forming puzzles which were invented in Japan. Using pure logic and requiring no math to solve, these fascinating puzzles offer endless fun and intellectual entertainment to puzzle fans of all skills and ages.

The game features a highlighting option to help see if a wall segment is about to become isolated, and an island size counter to view how many squares belong to an island.

To help see the puzzle progress, graphic previews in the puzzle list show the progress of all puzzles in a volume as they are being solved. A Gallery view option provides these previews in a larger format.

For more fun, Conceptis Nurikabe includes a Weekly Bonus section providing an extra free puzzle each week.

PUZZLE FEATURES

• 90 free Nurikabe puzzles
• 30 extra-large puzzles bonus for iPad only
• Extra bonus puzzle published free each week
• Multiple difficulty levels from very easy to extremely hard
• Puzzle library continuously updates with new content
• Manually selected, top quality puzzles
• Unique solution for each puzzle
• Hours of intellectual challenge and fun
• Sharpens logic and improves cognitive skills

GAMING FEATURES

• Unlimited check puzzle
• Unlimited Undo and Redo
• Highlight wall segments
• Show island size counter
• Concurrently playing and saving multiple puzzles
• Puzzle filtering, sorting and archiving options
• Dark Mode support
• Graphic previews showing puzzles progress as they are being solved
• Portrait and landscape screen support (iPad only)
• Track puzzle solving times
• Backup & restore puzzle progress to iCloud

ABOUT

Nurikabe have also become popular under other names such as Islands in the Stream and Cell Structure. Similar to Sudoku, Kakuro and Hashi, the puzzles are solved using logic alone. All puzzles in this app are produced by Conceptis Ltd. - the leading supplier of logic puzzles to printed and electronic gaming media all over the world. On average, more than 20 million Conceptis puzzles are solved each day in newspapers, magazines, books and online as well as on smartphones and tablets across the world.

Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://www.conceptispuzzles.com/index.aspx?uri=info/doc/220

## Key features

- Partition grid with walls
- Create islands of specific sizes
- Multiple difficulty levels
- Highlight wall segments
- Island size counter
- Weekly bonus puzzles
- Unlimited undo/redo

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Easy Variety 1 | $1.99 | one-time |
| Medium Variety 1 | $1.99 | one-time |
| Hard Variety 1 | $1.99 | one-time |
| Medium Variety 2 | $1.99 | one-time |
| Hard Variety 2 | $1.99 | one-time |
| Big & Medium 1 | $1.99 | one-time |
| Big & Easy 1 | $1.99 | one-time |
| Big & Tough 1 | $1.99 | one-time |
| Big Challenges 1 | $1.99 | one-time |
| Medium Snacks 1 | $0.99 | one-time |
| Hard Snacks 1 | $0.99 | one-time |
| Big & Medium 2 | $1.99 | one-time |
| Medium Variety 3 | $1.99 | one-time |
| Hard Variety 3 | $1.99 | one-time |


## What do users think of Nurikabe?

Overall sentiment: positive

**Pros**

- 🚀 Great logic game
- 👍 Well executed with practical features
- 👍 No ads
- 👍 Perfect UI
- 👍 Challenging puzzles
- 👍 Affordable entertainment
- 👍 Excellent interface
- 👍 Clean, functional UI
- 👍 Addictive and fun

**Cons**

- 💰 Very expensive for additional puzzles
- 🐛 Keeps asking to rate the app even after rating

**Commonly reported bugs**

- Game is broken and keeps asking to rate it

**Most requested features**

- Add a 'pencil' mode to mark uncertain squares
- Enable dragging to cover multiple squares
- Add an 'all black' mode
- Implement a 'save progress' feature
- Provide more free puzzles

## Recent user reviews (10 of 186)

All indexed reviews: https://appshunter.io/ios/app/nurikabe-islands-and-walls/id581912445/reviews.md

### 5/5 — 難易度が絶妙

*2026-03-26*

簡単なのは何も考えず遊べて、難しいのはしっかりと考える必要がある
気分転換にぴったり⭐︎

### 2/5 — 途中までは楽しいが

*2025-04-27*

超上級が仮置きするしかなく、理詰めで解けないのがつまらないです。美しくない。

**Developer response:** 理詰めで解けないとのこと、でご意見いただきありがとうございます。よろしければ、問題の箇所の画像など問い合わせメールにいただけましたら、見させていただきたいと思います。

### 5/5 — かべパズル定期的にやりたくなります

*2025-04-24*

昔から紙でやってました。
無心で集中できるのと達成感が好きです。
このアプリは手軽に出来て良いです。

### 5/5 — Great logic game

*2025-04-07*

Well executed with practical features to make it logistically simpler to play

### 4/5 — Great games, but very expensive

*2025-03-10*

Great game, but if you are fast in doing the puzzles,  
the free ones are very limited, and to buy more it’s insanely overpriced 🥹

**Developer response:** Thank you for your feedback. Our policy is to provide a top quality puzzling experience in a relaxed atmosphere without the disturbance of ads and other annoying messages. Therefore, to continue maintaining the app and provide more new puzzles every week we have to charge for the extra content. We thank you for your understanding.

### 5/5 — perfect app

*2024-03-13, version 4.1*

no ads and the ui is perfect conceptis ltd we love uuuuuu

### 5/5 — Love all your puzzles

*2023-11-29*

Would really love to see an app for your Skyscrapers puzzle too

### 5/5 — good

*2023-11-03*

上級は面白い

### 5/5 — Addictive!!

*2023-10-21, version 4.2*

Found this app and can’t stop playing 🤓

### 5/5 — 更新に期待

*2023-10-18*

更新ありがとうございます。
好きなパズルなのでUIが見やすくなり嬉しいです。

難しい問題になると仮置きが発生するタイミングあるので、仮置き機能が欲しいです。
（確定マスが見えてない場合があるかもしれないですが）
特に空白が広く数字が大きいと必ず一旦仮置きをしています。

仮置き数は複数あれば嬉しいですが、
だいたい1つあれば賄えますので仮置きボタンと、それを確定するか削除するかのボタンがほしいです。
今は一旦仮置きして、後々詰まったら仮置き開始した段階まで戻るを連打しています…。

上級まではだいたい無しでもこなせますが、それ以上になると仮置きがないとやるのがしんどいです。
パックも気軽に上級が買えないので、検討して下さると助かります。

## Frequently asked questions about Nurikabe

### What is Nurikabe: Islands & Walls?

Nurikabe: Islands & Walls is a logic puzzle game where you partition a grid with walls to create islands. Each island must contain a clue and its size must match the clue's number. The goal is to use pure logic to fill the entire grid according to these rules.

### What are the key features of this app?

The app offers 90 free puzzles with more added weekly, multiple difficulty levels, unlimited undo/redo, a highlighting option for wall segments, and an island size counter. It also supports dark mode and iCloud backup.

### Is Nurikabe: Islands & Walls free to play?

The app is free to download and play, offering a substantial number of free puzzles. Additional content or features may be available through in-app purchases.

### What devices is this app compatible with?

The app is designed for mobile devices. Specific compatibility details, such as operating system versions, can typically be found on the app store listing.

### What are some common use cases for this app?

This app is ideal for anyone looking to sharpen their logic skills, improve cognitive abilities, or simply enjoy a mentally stimulating challenge. It's perfect for passing time during commutes or relaxing with a brain teaser.

## Version history (last 5 releases)

### 5.0 — 2026-04-16

This version improves performance and stability.

### 4.9 — 2025-12-03

This version improves performance and stability.

### 4.8 — 2025-08-17

This version improves performance and stability.

### 4.7 — 2025-03-27

This version improves performance and stability.

### 4.6 — 2024-11-19

This version improves performance and stability.

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| App | Rating | Price | Category |
| --- | --- | --- | --- |
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| [Sudoku: Logic Puzzle Workshop](https://appshunter.io/ios/app/sudoku-logic-puzzle-workshop/id1031502396) | 4.6 (220) | Free | Games |
| [LogiBrain Grids](https://appshunter.io/ios/app/logibrain-grids/id1019316882) | 4.3 (166) | Free | Games |
| [Sudoku 6](https://appshunter.io/ios/app/sudoku-6/id568783854) | 4.4 (8) | Free | Games |
| [Sudoku 9](https://appshunter.io/ios/app/sudoku-9/id403191170) | 4.8 (21) | Free | Games |
| [Sudoku.Gold - number puzzle](https://appshunter.io/ios/app/sudokugold-number-puzzle/id1559372066) | — | Free | Games |

## More apps by Conceptis Ltd.

- [Fill-a-Pix: Minesweeper Puzzle](https://appshunter.io/ios/app/fill-a-pix-minesweeper-puzzle/id479420052)
- [Pic-a-Pix: Nonogram Color](https://appshunter.io/ios/app/pic-a-pix-nonogram-color/id503132420)
- [Link-a-Pix: Nonogram Links](https://appshunter.io/ios/app/link-a-pix-nonogram-links/id517602670)
- [Sudoku: Classic & Variations](https://appshunter.io/ios/app/sudoku-classic-and-variations/id537201666)
- [Hashi: Bridges](https://appshunter.io/ios/app/hashi-bridges/id567583852)

All apps by Conceptis Ltd.: https://appshunter.io/developer/479420055

## Related topics

[nurikabe](https://appshunter.io/ios/topics/nurikabe) · [nurikabe puzzle](https://appshunter.io/ios/topics/nurikabe-puzzle) · [japanese nurikabe puzzle](https://appshunter.io/ios/topics/japanese-nurikabe-puzzle)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-01.*