zongo

One line. Every numbered dot, in order. Never cross your own path. That is the entire rule. Learning it takes ten seconds. The puzzles that grow out of it will keep you busy for months. zongo is a logic path puzzle: draw a single unbroken line that visits every numbered dot in sequence and fills every cell on the board. There is exactly one solution, and you can always reason your way to it. No guessing, no timers counting down, no lives, no waiting. A NEW PUZZLE EVERY DAY A fresh daily puzzle, the same one for everyone, plus a streak worth protecting. Solve it and keep going — Endless generates as many puzzles as you want, at the size, shape and difficulty you choose. NINETEEN BOARDS, NOT ONE Most path puzzles are a square grid and stop there. zongo keeps the rule and changes the world underneath it: honeycombs, triangles, octagons, circular boards, spirals and mosaics. Then it gets strange — a Portal Wrap board where the edges connect, a Möbius strip with a half twist, a Klein bottle, a projective plane, a cube you solve across its faces or around its corners, a Penrose tiling that never repeats, and a hyperbolic disk where the grid grows as it reaches the rim. Same rule every time. Completely different reasoning. A CAMPAIGN THAT TEACHES Eighty-seven hand-tuned levels that introduce each board and each technique in order, so nothing arrives before you have the tools for it. LEARN THE TECHNIQUES Thirteen built-in lessons cover the reasoning that solvers actually use — sealed pockets, corners and dead ends, walls, corridors, forced moves, rooms, counting colours, and reading the numbers for what they rule out — then take you onto a honeycomb and a Portal Wrap board. Short, interactive, and playable at any time. A COACH THAT NEVER PUNISHES YOU When a path is heading somewhere unsolvable, zongo tells you — before you waste ten minutes finding out. Dead-end warnings, gentle nudges and lessons are free, always, and cost you nothing. Getting unstuck is not a purchase. RACE SOMEONE IN THE SAME ROOM Hand a phone to a friend and race the same puzzle side by side, live. Or share any puzzle as a link — they play the exact board you played, and their time lands on its scoreboard next to yours. Race a ghost of a previous solve and watch the line redraw itself stroke by stroke. OPEN A ROOM, ANYWHERE Open a live room, read out the code, and up to twelve friends race the same board from wherever they are — then watch every line replayed together on one board. Build your own levels, name them, and publish a campaign: one link that hands your friends a whole set to play in order. Anything anyone shares lands in the public campaign, for everyone. TWENTY-NINE THEMES Blueprint, newsprint, e-ink, sakura, synthwave, deep sea, code rain, stained glass and more, with ambient motion you can turn off. Or let zongo roll a new one for every puzzle. BUILT THE WAY GAMES USED TO BE No ads. No subscription. No accounts. No tracking. Anonymous usage measurement is off until you switch it on, and every puzzle plays offline — the only thing that ever leaves your device is a scoreboard time you chose to post. Buy it once, or never, and it is still a complete game. FREE, WITH NO CATCH The daily puzzle, streaks, the weekly gauntlet, all thirteen lessons, the whole Race tab, a live room on the house, Endless play, a set of themes and the first twenty campaign levels are free forever, no ads attached. Zongo Full unlocks the remaining sixty-seven campaign levels, every board shape in Endless, the full theme gallery, saving in the level builder, unlimited live rooms, up to five campaigns of your own, and Coach Insights — unlimited hints, alternate-solution reveals, and full history. One payment. No subscription. Universal: iPhone, iPad and Mac, one purchase for all three. Game Center leaderboards and achievements. Full VoiceOver and Dynamic Type support.