One Line — One Stroke Puzzle
Contains ads
Everyone
info
10+
Downloads
Everyone
Learn more
About this game
One Line is a clean, calming one-stroke puzzle.
Trace a single continuous line that crosses every edge of the figure exactly once — without lifting your finger and without retracing a line you've already drawn. It's the classic "draw it in one stroke" puzzle you knew as a kid, rebuilt as a relaxing, ad-light pocket game.
★ FEATURES
• Hundreds of solvable puzzles. Every level is generated to guarantee a one-stroke solution exists — no impossible boards, ever.
• Dead-simple controls — just drag your finger from dot to dot.
• A difficulty curve that actually grows: a few edges at first, branching networks later.
• Unlimited Undo and Restart — experiment freely with no penalty.
• Stuck? Tap Hint to reveal the next stroke of the path (optional rewarded ad).
• Glowing line trails, a soft tactile feel, and gentle sound — both sound and haptics can be toggled.
• Works fully offline. No login, no account, no nag screens.
★ HOW TO PLAY
1. Touch any dot to start your line.
2. Drag to a connected dot to draw that edge.
3. Drag back to undo the last edge any time.
4. Cover every edge exactly once to clear the level.
★ WHY YOU'LL LOVE IT
• Minimal, glowing visuals — dots and a single bright line, nothing else.
• Plays great in short bursts (one level in under a minute) or long focused sessions.
• Tiny app size with smooth animations.
• A true brain workout: planning your route is the whole game.
★ ABOUT DIFFICULTY
Each level is built by walking a path across a grid, so the puzzle you see is always something that can be drawn in one stroke. Early levels teach the idea in a handful of moves; later levels open up into branching networks where choosing the right turn matters.
Hint is there for the moments you've boxed yourself in — but with a little planning, you'll learn to read the whole path before you start.
★ PRIVACY
One Line doesn't collect any personal information. The only third party is Google AdMob, which serves the ads that keep the game free. EEA/UK users see the standard consent dialog on first launch. All your progress is stored only on your device.
Trace a single continuous line that crosses every edge of the figure exactly once — without lifting your finger and without retracing a line you've already drawn. It's the classic "draw it in one stroke" puzzle you knew as a kid, rebuilt as a relaxing, ad-light pocket game.
★ FEATURES
• Hundreds of solvable puzzles. Every level is generated to guarantee a one-stroke solution exists — no impossible boards, ever.
• Dead-simple controls — just drag your finger from dot to dot.
• A difficulty curve that actually grows: a few edges at first, branching networks later.
• Unlimited Undo and Restart — experiment freely with no penalty.
• Stuck? Tap Hint to reveal the next stroke of the path (optional rewarded ad).
• Glowing line trails, a soft tactile feel, and gentle sound — both sound and haptics can be toggled.
• Works fully offline. No login, no account, no nag screens.
★ HOW TO PLAY
1. Touch any dot to start your line.
2. Drag to a connected dot to draw that edge.
3. Drag back to undo the last edge any time.
4. Cover every edge exactly once to clear the level.
★ WHY YOU'LL LOVE IT
• Minimal, glowing visuals — dots and a single bright line, nothing else.
• Plays great in short bursts (one level in under a minute) or long focused sessions.
• Tiny app size with smooth animations.
• A true brain workout: planning your route is the whole game.
★ ABOUT DIFFICULTY
Each level is built by walking a path across a grid, so the puzzle you see is always something that can be drawn in one stroke. Early levels teach the idea in a handful of moves; later levels open up into branching networks where choosing the right turn matters.
Hint is there for the moments you've boxed yourself in — but with a little planning, you'll learn to read the whole path before you start.
★ PRIVACY
One Line doesn't collect any personal information. The only third party is Google AdMob, which serves the ads that keep the game free. EEA/UK users see the standard consent dialog on first launch. All your progress is stored only on your device.
Draw one continuous line over every edge. No lifting, no repeats. Relax & solve.
Updated on
Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
- No data shared with third partiesLearn more about how developers declare sharing
- No data collectedLearn more about how developers declare collection
- Data is encrypted in transit
What’s new
v1.0.1
• Updated to target Android 16 (API 36) per Google Play requirements.
• Minor stability improvements.
• Updated to target Android 16 (API 36) per Google Play requirements.
• Minor stability improvements.
