A logic puzzle in Crux # One Line > One Line is a logic puzzle in Crux, free on iPhone and iPad with no ads. Trace a path from one to the last number in order. Every square gets visited. Do not lift your finger. Each number turns green as you pass it. One line through every dot. Pure calm. Get Crux Free on iPhone and iPad. No ads. ## How to play One Line - **Numbered Stops.** Trace a path from one to the last number in order. - **Cover Every Cell.** Every square gets visited. Do not lift your finger. - **Numbers Light Up.** Each number turns green as you pass it. Plan one step ahead. ## How it fits your day One Line is one of a ton of games in Crux, with a new set of daily puzzles every day, no ads and nothing you have to buy to play. Your streak grows each day you play, and you can compare results with friends (friends are off under 13). Crux has a No Wifi section with practice rounds you can play offline; the daily games download each day's puzzle when you are online. ## Also in Crux The same app has [Kings](https://crux.quest/games/kings/) (one crown per row, column and region), [Pipes](https://crux.quest/games/pipes/) (turn pipes into one network), [The Parcels](https://crux.quest/games/parcels/) (split the grid into boxes), [Clear Field](https://crux.quest/games/clear-field/) (a minefield solved by logic), [Wordoku](https://crux.quest/games/wordoku/) (sudoku with letters), [Checkmate Minute](https://crux.quest/games/checkmate-minute/) (a daily chess mate). ## Who it suits If you like Zip, LinkedIn Zip or Hidato, One Line will feel familiar. It suits people who like calm logic puzzles with one right answer. ## Similar games you may know - **Zip**: the LinkedIn one path puzzle. - **LinkedIn Zip**: the LinkedIn one path puzzle. - **Hidato**: number path filling the grid. - **Numbrix**: fill the grid with one numbered path. These are other games, listed so you know what One Line is like. Crux is not connected to them. ## About Crux Crux is a free iPhone and iPad app from Pizzart Pte. Ltd. with a ton of daily word, logic, number, geography, trivia, colour and arcade games, and no ads. Every game is free to play and none needs a purchase: some open after a few days of play, or sooner with coins you earn by playing. Optional Crux Plus costs $4.99 a month or $39.99 a year in the US. [The facts](https://crux.quest/ai) · [Questions](https://crux.quest/faq) · [What no ads means](https://crux.quest/no-ads) ## More games like One Line - [The Parcels](https://crux.quest/games/parcels/) - [Pipes](https://crux.quest/games/pipes/) - [Kings](https://crux.quest/games/kings/) - [Directions](https://crux.quest/games/directions/) - [Outnumbered](https://crux.quest/games/outnumbered/) - [Tile Link](https://crux.quest/games/tile-link/) [See all games](https://crux.quest/games/)