Numberlink Line Puzzle: Filum

Filum is Numberlink — also called Number Link or Arukone — the classic pencil-and-paper line puzzle: connect matching numbers with one unbroken line, fill every cell of the grid, and never cross another line. Every puzzle has exactly one solution.

HOW TO PLAY
• Drag from a number to its twin to draw a line between them.
• Lines run across and down. They never cross and never branch.
• A puzzle is solved when every pair is connected and every cell is filled.

EXACTLY ONE SOLUTION
• Every puzzle is proven to have exactly one solution before it ships.
• Stuck? A hint shows the next move and tells you why it follows.
• A short interactive tutorial teaches the rules and the first tricks on real boards.

ALL OFFLINE, NO ACCOUNT
• Campaign: 12 chapters and 360 levels, from a relaxed 6x10 grid to a 12x18 expert board.
• Daily puzzle: a new puzzle every day, the same for every player worldwide.
• Endless mode: easy, medium, hard and expert – play at your own pace.
• No internet, no account and no login needed.

A TROPHY FOR EVERY MONTH, NO STREAKS
• Solve every daily puzzle of a month to earn that month's trophy.
• Missed a day? Catch up from the calendar at any time. Nothing resets.

CALM, CLEAN, MADE FOR LOGIC FANS
• Lines look like pencil on paper and are matched by number, not by colour – just like the original Numberlink.
• Undo, redo, and pinch to zoom on the big boards.
• Material You design in light and dark themes that picks up your wallpaper colours.
• Optional daily reminder.
• Google Play Games: cloud save, achievements and leaderboards.

FREE AND FAIR
• Free to play with ads. A single one-time purchase removes all ads and unlocks unlimited hints.
• Hint packs for an occasional top-up, free hints for watching an optional video, and a free hint pack for sharing Filum once.
• The daily puzzle and its archive are free for everyone, with no ads between puzzles.
• Every puzzle can be played without paying.

Love connect-the-dots and pipe puzzles? Filum is Numberlink the way puzzle magazines print it: numbers, a pencil line and nothing else.