Fill line : One line : Fill one line is a simple but addictive one line puzzle game that’s completely free to play.



Features of Fill line : One line : Fill one line puzzle game.
💥 4 modes with 5 levels of difficulty
💥 A whopping 2,000 puzzles.
💥 Hints are also free, of course.
💥 Your brain becomes more active during your commute, before you sleep… enjoy downtime with brain training.



How to play Fill line : One line : Fill one line game:
- Just fill in all of the blocks using only one line (1line or one line)

Sharpen your mind with a connect-the-block-style one-line brain training puzzle game.

Don’t get too cozy—the puzzles get harder as you go along.

One line puzzles are mathematical problems with origins in the early 18th century.
You’re sure to get hooked on these puzzles!

It's also very entertaining to do puzzle.
Fill line : One line : Fill one line puzzle game is the best you can try to sharpen your mind.