Chordline
Connect colors, light the grid.
A line puzzle where solving is playing. Connect same-colored dots, fill every square, and the pitch rises a half step with each connection — until the whole board lights up at once. 984 puzzles, no timers, no fail states.
Free · No sign-up, no account, plays offline
Everything a line puzzle should be.
One rule, three ladders, and 984 boards that each have one answer.
One line per color
Drag from a colored dot to its pair. Retrace the line to erase it — there is no undo button to hunt for.
Solving is playing
Every connection raises the pitch by a half step, so finishing a board plays a rising run rather than a chime.
The whole board ignites
Fill the last square and every line lights up at once, with a flash, a shake and sparks in each pipe's own color.
984 puzzles, three ladders
Easy opens the game, Hard starts where Easy never reaches, and Extreme unlocks once you clear it.
Exactly one solution
Every board was checked to have a single answer, so a puzzle is never ambiguous and never unfair.
Shapes as well as color
Each color carries its own glyph — triangle, diamond, hexagon — so pairs stay readable if colors are hard to tell apart.
No timers. No fail states.
Chordline is free to play. A round runs 10 to 30 seconds and there is nothing to lose — puzzles cannot be failed, only reset or left. Progress follows your own iCloud across your devices.
Supported by ads between stages, plus an optional ad for a hint. Ads can be removed with a single purchase — no subscriptions.
