In development
Insula
Form islands in the sea. Pure logic deduction, no guessing. Clean Nurikabe.
- Flutter
- Material 3
- Offline
- 13 languages
Not on Google Play yet.
Insula is a Nurikabe puzzle — also known as Islands in the Stream — designed for players who love pure, unhurried logic.
Every number on the grid marks an island of that exact size. Every island has exactly one number, and islands never touch horizontally or vertically. The rest is sea: a single connected ocean that nowhere forms a solid 2×2 pool of water.
No guessing, ever
Every puzzle has exactly one solution, and every step can be deduced with logic alone. Each board is verified by a human-style solver that only uses explainable deductive techniques. You will never have to guess or use trial and error.
A weekly rhythm
Gentle on Monday, deeply challenging on Sunday. Build your streak day after day, and protect it with a streak freeze when life interrupts.
Built to be pleasant
Warm amber and deep ocean Material 3 design with full light and dark mode support. Plays 100% offline with optional Google Play Games cloud save and achievements.
Free and fair
Insula is free to play and supported by respectful ads. Remove ads permanently with a single one-time purchase.
Data safety
What Insula does with data
| Data | Handling | Purpose | Linked to you |
|---|---|---|---|
| Device or other IDs (Advertising ID) | Collected, shared with Google AdMob | Advertising | Not linked to your identity |
| Approximate location (from IP) | Collected by AdMob | Advertising | Not linked to your identity |
| Play Games player ID, profile name | Collected only if you sign in | Leaderboards, achievements, cloud save | Linked to your Google account |
| Purchase history | Handled by Google Play Billing | Entitlement: unlocking what you bought | Linked to your Google account |
| Game progress and settings | Stored on your device only | App functionality | Not collected by us |
Package: dev.sequencode.insula