The rule of fill one line is very simple, just to fill all blocks with one line.
This fill one line game includes 1500 puzzles, 5 expertise levels, plus 5 difficult levels for each expertise level.
Also there are 3 hints per day if a particular fill one line problem is too hard to address.
The fill one line puzzle game is good to keep your mind sharp, we hope you enjoy it.
9Apps 4.9
