LinkFlow

LinkFlow is a quiet, careful puzzle. Pairs of coloured dots sit on a grid. Drag from one dot to its twin to draw a pipe between them. Two rules, and that is the whole game: • Pipes cannot cross each other • Every square on the board must end up covered Connecting all the pairs is the easy half. Covering the board without leaving a gap is what makes you think. ONE EXACT SOLUTION Every level shipped with LinkFlow was checked by a solver before it went in: each one has exactly one way to fill the board. No level can be finished by connecting things at random, and no level rejects a layout that ought to work. When you find the answer, it is the answer. FOUR DIFFICULTY TIERS • Normal — 5×5, a few lines, to learn the rules • Hard — 7×7 • Expert — 8×8, up to ten lines at once • Master — 9×9 with twelve lines, where the board is nearly full before you begin Levels within a tier are ordered by how much reasoning they actually need, so the difficulty climbs steadily instead of jumping around. MADE TO PLAY WITH ONE THUMB • Drag back along a pipe to undo it a square at a time — no need to redraw the line • Run into another line and it gives way, so you never have to clear up first • The progress bar shows both how many pairs are joined and how full the board is — because "all connected but not solved" is the thing that confuses people NO ADS. NO SIGN-UP. WORKS OFFLINE. There are no adverts, no accounts and no in-app purchases. Every level is built into the app, so it works with no connection at all. PRIVACY LinkFlow does not ask for your name, email or phone number, and requests no camera, microphone, location or contacts permission. Which level you are on is kept on your phone. See the privacy policy for the full detail.