Best Free Line and Untangle Puzzle Games Online

Line and untangle puzzles use one idea and bend it many ways: draw a line, move a node, slide an arrow, and a tangle becomes tidy. They are calm, quick to learn and good for the end of a long day. This guide covers the ones on PlayKovo, what each one asks of you and how to solve the stuck moments.

Untangle: move the nodes

Untangle Threads asks you to drag glowing nodes until no thread crosses another, across several stages. On desktop you click and drag the nodes; on mobile you tap and drag. Early levels are quick, and later ones need a plan. It is the closest thing on the site to the classic untangle puzzle.

One line: trace a path

Constella has you connect stars with one continuous line to reveal constellations. You left-click and drag to trace, with buttons for undo. Brain Line Connect asks you to draw one unbroken line connecting every matching pair on the board, with a mouse drag or touch drag. In both games the rule is the same: you may not lift the line and you may not cross it.

If you want a harder version of the same rule, our logic games guide covers more of its relatives.

Arrows: order matters

Arrow Exit Puzzle has you tap arrows in the right order to slide them off the grid without getting blocked in. Super Line Go: Escape is a minimalist version where you slide arrows off the board without touching other arrows. You click or tap an arrow to send it on its way. Nothing is timed, so the puzzle is purely about finding the order.

Lines with action

Line Color 3D turns drawing into a reflex game: hold to draw a glowing line along a winding track, dodging spinners, saws and crushers. Line Zen asks you to slide a finger to guide a ball down a twisting road, dodging spikes and moving blockers. These suit you when you want the same visual idea with a faster pulse.

How to get unstuck

1. Start from the hardest spot. In untangle, find the node with the most threads and place it first. In arrow puzzles, find the arrow that is already free.
2. Work backwards. In one-line puzzles, check where the line must end. A dead end tells you where the path cannot start.
3. Look for forced moves. A square with only one open neighbour has only one way through, so that decides part of your route.
4. Undo freely. There is no shame in using undo. A puzzle is a place to try things.
5. Come back later. A solution that is invisible after ten minutes can show up in seconds on a fresh look.

Which one first?

For more thinking games, see our five-minute brain games, or browse the untangle category.