Store game · Puzzle
1LINE one-stroke puzzle game
A one-rule puzzle game: connect every point with a single stroke, across 850 stages in 15 levels.
Get the game
Opens the official store page
- Developer
- GAMINCAT, INC.
- Score
- 4.7
- Downloads
- 10K+ ratings
- Age
- Rated 17+
- Genre
- Puzzle
- Price
- Free
Screenshots
About this game
1LINE has exactly one rule. Each stage shows a figure made of points, and the player has to trace through all of them in a single unbroken stroke. Where the line begins doesn't matter. That's the whole game, pitched as a brain-training exercise for a commute or the last few minutes before bed. There are 15 levels containing 850 stages in total. Early figures are simple shapes, and each new level adds more lines, so the drawings get more tangled as progress continues. Some stages also use special line types, including one-way lines and overlapping lines, which change how a route can be planned. Hints are available for the stages that refuse to give way. The game is free to play. One practical tip from the developer: the easy stages aren't filler, since the tricks needed for the later puzzles are introduced there.
1LINE one-stroke puzzle game: the full guide
What the game is
One rule, 850 stages. 1LINE from Gamincat presents a figure built from dots and asks you to draw through all of them without lifting your finger. Nothing else is layered on: no timer, no score multipliers, no story.
The stages are grouped into 15 levels. The first ones are plain shapes, and each level after that adds more lines until the drawings become proper tangles. A few special line types appear along the way, including one-way lines and overlapping ones, and those are what turn a tracing exercise into a routing problem.
How a session plays
A stage takes somewhere between ten seconds and a few minutes. You look at the figure, decide where to start (it genuinely doesn't matter where), and drag your finger across the points. If you reach a dead end with points still unvisited, you reset and try another starting corner or another order.
The later special lines change the planning: a one-way segment can only be crossed in a set direction, and overlapping lines mean some crossings have to be revisited. Hints exist for the stubborn ones. Gamincat's own advice is that the easy stages teach the tricks the hard ones depend on, so skipping ahead is a mistake.
Why people look for it
This is the digital version of the pen-and-paper puzzle most people tried as children, and that familiarity drives the searches. The pitch is brain training for a commute or the last minutes before sleep, and the single-rule design means there's nothing to relearn after a week away. 850 stages is enough to make it a long-term habit.
Look and feel
A puzzle like this needs very little on screen: points, lines, and the stroke you're drawing. The five screenshots are presumably variations on that, from simple polygons to the knottier late figures. Expect a clean, mostly empty layout with the stage counter and a hint button, since anything more would get in the way of seeing the figure.
Updates and upkeep
Gamincat is a small studio with a 4.7 rating across more than 10K ratings here, which is a healthy sample for a niche puzzle. With a fixed stage count of 850, the game doesn't depend on constant updates to stay worthwhile, and the listing gives no version or changelog to judge recent activity. It's linked on the App Store only.
