Lines to Fill

Lines to Fill is a relaxing logic puzzle about one simple idea: cover every tile. Each colored line starts from its own square. Drag it across the board, turn corners, and fill the whole shape without leaving a single tile empty. Every color must be used, and lines can’t cross each other.

Features:

250 levels that grow from tiny boards to large multi-line shapes
One-finger controls, easy to learn and hard to put down
Undo and restart as often as you like, with no timers and no lives
Clean, calm look with satisfying level transitions
Your progress is saved automatically

Touch a colored square and drag to draw its line. Move into any empty neighboring tile to extend it. Fill every tile on the board using all the colors to complete the level. Drag back over your own line to shorten it, or tap Undo or Restart if you get stuck.

Touch / Mouse: press on a colored square and drag to draw
Drag back along the line: shorten it
Undo button (or Z / Backspace): undo your last move
Restart button: clear the board
Pause button: pause, restart or return to the menu