OneLine

About OneLine: Draw a Line, Protect Your Characters

OneLine is a puzzle game built around a single, irreversible action: drawing one continuous line to shield small characters from the dangers closing in on them. The line you draw transforms into a 3D shape the moment you lift your hand, and that finality is exactly where the game gets its name. Rain, rocks, and bombs all threaten the characters, so every stroke has to count before you let go.

In one scene, a thick black line forms a three-sided enclosure around a character and a red balloon. Another moment shows a small character in a red shirt and blue pants standing near that same red balloon on a thin black string. A green plant with two large bulbous leaves and white triangular teeth-like edges hangs from a long vine in a separate scene.

How to Play OneLine

Draw a line around your characters to protect them from incoming dangers — rain, rocks, and bombs. The critical rule is that the line is completed the instant you release your hand, so the entire path must be planned and executed in a single unbroken stroke. Because the game is called OneLine, that one-and-done commitment is the core challenge every round.

Games You Might Like

If the single-stroke puzzle logic of OneLine appeals to you, the broader world of puzzle games on Playgama has plenty more brain-training challenges to explore across every style and difficulty. For a different kind of spatial thinking, Arrow Exit Puzzle asks you to clear a grid of arrows in the correct sequence, rewarding the same careful planning that OneLine demands. Arrow Puzzle builds on that idea with maze-like boards, blocked moves, and daily challenges that grow more strategic as layouts evolve — a natural next step for anyone who enjoys one-move-at-a-time puzzle design. Fans of desktop brain-training challenges can also browse the full collection of games for PC to find more titles that reward focused, deliberate thinking.