Lines To FillPlay Lines To Fill free online. A relaxing logic puzzle game where you draw a continuous line to fill every empty square on the grid without getting stuck.
Lines To Fill
Lines To Fill is a satisfying logic puzzle that challenges your spatial reasoning. Starting from a single point, you must draw a continuous line that touches and fills every empty block on the grid without crossing over your own path or getting stuck.
The early levels serve as a gentle warmup, introducing simple shapes and straightforward paths. However, as you advance, the boards become larger and more complex, forcing you to carefully plan your route before making your first move. It is a relaxing but brain-teasing experience that is easy to pick up but surprisingly tricky to master.
Controls
Use your mouse to click and drag the line across the grid, or use the Arrow Keys on your keyboard to steer your path block by block. If playing on mobile, simply swipe to move.
Tips that actually help
- Look for bottlenecks: Identify narrow paths or single-entry sections of the grid. You often need to visit these areas first or last to avoid blocking yourself in.
- Work backwards: If you are stuck, try visualizing the path from the end point back to the start. Sometimes the final few moves are obvious and can guide your early decisions.
- Don’t be afraid to backtrack: If you realize you have made a mistake, you can always reverse your path to undo moves and try a different route.