The core idea of the game is simple: connect all the given dots with a single continuous line, without retracing any segment, using only one touch or stroke per level. Below is a concise guide to get started and level up efficiently.

play game: 1LINE - One Line with One Touch

How to play

1. Objective: Draw one continuous line that connects all specified points on the puzzle grid.

2. Rule: Do not lift your finger (or cursor) and do not draw over any line segment more than once.

3. Starting point: You can begin anywhere on the grid; the starting location does not matter for the rule.

4. One stroke: The entire level must be completed with a single line without re-tracing.

5. Hints: If stuck, look for opportunities where a single pass can connect multiple points while leaving future connections feasible. Some puzzles introduce “one-way” or overlapping lines; adapt by planning the line to pass through required points in a non-redundant sequence.

Strategies

1. Plan ahead: Before drawing, scan the entire grid to identify points that must be connected and potential branching points where the line will turn.

2. Trace path with purpose: Try to sketch a rough route mentally or on paper to ensure every point is included exactly once.

3. Avoid dead ends: If a path leads to a point that cannot be exited to reach remaining points without retracing, backtrack and choose a different turn sequence.

4. Work from edges inward: In many layouts, starting near the periphery and weaving inward helps prevent isolating interior points.

5. Use hints strategically: If the game provides hints, use them to reveal a viable route, then adapt the rest of the path to maintain a single stroke.

Common puzzle types you’ll encounter

1. Simple geometric shapes: Early levels often start with basic connections; they help establish the rule and validate line continuity.

2. Increasing complexity: Later levels add more points and potential lines, requiring more careful sequencing and anticipation of future connections.

3. Special line behaviors: Some puzzles include lines that must be arranged in particular orders or that interact in constrained ways; treat these as additional constraints to satisfy within the single-stroke rule.