One Line - One Stroke Puzzle

One Line is a one stroke puzzle game: draw every line of a figure in a single stroke, without going over any line twice. It looks simple, but each figure is a little brain teaser that rewards a careful plan.

Start on a dot, trace the shape and watch your line glow. Finish the figure and enjoy the confetti, a glowing stroke and a cheerful shout-out. Then take on the next one, a little bigger and a little trickier.

ONE ENDLESS JOURNEY, TWO KINDS OF PUZZLE
• Shapes: draw every line of the figure in one stroke. Start with 24 hand-made classics such as House, Envelope, Star, Cube, Heart and Hexagram, then take on new figures that keep growing.
• Blocks: drag one path from the start ring through every block, visiting each block exactly once. Boards grow and change shape: plus, L, U, ring, diamond, stairs and boards with holes.
• Shapes and Blocks are mixed in one endless level path, so there's always something new to try.
• Made a wrong turn? Go back over your line to undo, or restart the puzzle at any time.

🔥 EVERY 10TH LEVEL IS HARD
• Hard levels are bigger and trickier, and they score double points.
• Clear one for the first time to win a free hint.
• New twists keep figures fresh: twin lines must be drawn twice, and arrow lines can only be drawn one way.

GAME MODES
• Levels: an endless journey of Shapes and Blocks. Earn up to 3 stars per level. Solve it with no hints and no restarts for a perfect three-star score.
• Daily puzzle: a new puzzle every day, alternating between Shapes and Blocks. Solve it daily to build your streak.
• Beat the Clock: start with 60 seconds and race through a mix of Shapes and Blocks. Every solve adds time, and bigger puzzles add more. How many can you solve before the clock runs out?

HELPFUL BOOSTERS
• Hint shows the next correct move, and undoes a wrong turn first if needed.
• Reveal shows the whole route for a few seconds, so you can memorise it and draw it yourself.
• Open the daily chest every day to collect more boosters. Ran out? Watch an optional video to get one.

UNLOCK LINE COLOURS
• Collect 10 line colour themes, including Glow, Neon, Rainbow, Fire, Ocean and Lava.
• A new theme unlocks every 3 puzzles you solve, in any mode.
• Pick any unlocked theme in Settings to make your line your own.

BRIGHT, RELAXING AND SATISFYING
• Glossy neon tiles and glowing lines on a dark background, easy on the eyes.
• Smooth, responsive drawing with a rising tone as your line grows.
• Original background music, sound effects and vibration, each with its own on/off switch.
• No time limit in Levels or Daily mode, so you can think at your own pace (faster solves score more points).
• No account or sign-up needed. Your progress is saved on your device.
• The puzzles work without an internet connection.

HOW TO PLAY
1. Tap Play to start your next level.
2. Shapes: start on a dot and draw every line once, without lifting your finger.
3. Blocks: drag from the start ring through every block, visiting each block only once.
4. Stuck? Use a Hint or Reveal, or restart and try a new starting point.

If you enjoy connect the dots games, logic puzzles and brain teasers, this one stroke drawing game is made for you. Short levels are perfect for a quick break, while hard levels, the daily puzzle and Beat the Clock keep experienced players coming back.

One Line is free to play and supported by ads. Rewarded videos are always optional.

Draw your first line and see how far you can go!