On Google Play
Filum
A thread puzzle — connect matching numbers, never crossing.
- Flutter
- Material 3
- Offline
- 27 languages
Filum is a Numberlink logic puzzle — the classic pencil-and-paper puzzle of joining numbered ends with a single unbroken thread — for people who want real deduction, not a guessing game wearing a puzzle’s shape.
Every pair of matching numbers marks the two ends of one thread. Draw a path between them that never crosses or branches, and fill the whole board: every single cell belongs to exactly one thread when you are done.
No guessing, ever
Every puzzle has exactly one solution, and every solution can be reached by deduction alone. Each one is verified by a solver that only uses techniques a human can actually follow. You will never be asked to guess.
A weekly rhythm
Gentle on Monday, demanding on Sunday. Every day you solve fills a square on the month’s calendar, and filling in a whole month earns its trophy. Miss a day and you can still play it from the calendar — catching up is the ordinary way to play, not a penalty.
Free, and fair about it
Filum is free and supported by ads. One purchase removes them for good and makes hints unlimited — there is no subscription, and nothing in the game is locked behind it. The daily archive is free for everyone, because catching up on a missed day is how the month is meant to be filled.
Data safety
What Filum 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 |
| App interactions | Collected with your consent | Analytics | 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.filum