One Line: Logic Puzzle

One line. Every cell. It's up to you to find the path. One Line is a logic puzzle game that's easy to understand and full of challenges. Draw one continuous line through every playable cell exactly once. Explore varied worlds, take on the daily challenge and choose how you play: at your own pace, against the clock or with friends. One simple rule, paths that make you think The first grids teach you the basics. Then new constraints change how you find your way: • Arrows that require you to enter from a specific direction • Walls that block certain routes • Disabled cells that change the shape of the grid • End cells that determine where you finish Each mechanic is easy to understand. The way they combine makes all the difference. Have you tried today's challenge? A new series of timed puzzles awaits you every day. Replay it to improve your time, earn a medal or move ahead of your friends on the leaderboard. Bronze, silver, gold or platinum: choose your goal. A challenge to solve, a result to be proud of and a little friendly rivalry. Already finished today's challenge? Find thousands of past challenges in the calendar, going back to January 1, 2000. No need to wait until tomorrow to keep playing. 450 official levels to explore Discover 29 worlds with four difficulty levels, from Easy to Expert: • 300 levels in the Classic campaign • 150 additional levels in the Labyrinths pack Earn a gold star by completing a level, then a platinum star by finishing a world. Some puzzles have multiple valid solutions: One Line remembers the unique paths you discover. Rush — beta mode How many grids can you solve in 60 seconds? Race through puzzles in three variants — Sprint, Classic and Complex — each with its own records and leaderboards. Play with friends — multiplayer beta One more round? Get together in a private room for 2 to 5 players, solve the same series of puzzles and follow everyone's progress. Quick two-player matches are also available. Match over? Start a rematch. You need an account to create a room. An invitation lets you join as a guest. Access Rush and multiplayer by enabling the beta program in the game settings. Progress your way Complete worlds, aim for platinum, earn experience and raise your player level. Your daily streak and monthly goals also let you earn hints. Stuck in the campaign? A hint reveals part of the solution without giving away the whole puzzle. The campaign, even offline Play without an Internet connection and keep your progress on your device. An optional account lets you sync your progress. Leaderboards and multiplayer require an Internet connection. At your own pace, against the clock or against your friends. Find your next challenge.