Number Link Line Puzzle: Filum

Filum is Number Link, 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 – and you can reach it by logic alone. 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. NEVER GUESS, ALWAYS KNOW • Every puzzle is proven to have exactly one solution before it ships. • Every board is checked by a solver that only uses steps a person can follow – no trial and error. • Stuck? A hint shows the next safe 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, but want a real brain teaser instead of a guessing game? Filum is Number Link done properly: one certain step at a time.