Fill One Line puzzles are mathematical problems with origins in the early 18th century. A simple but addictive one line puzzle game that’s completely free to play. Sharpen your mind with a connect-the-block-style one-line brain training puzzle game. A simple but addictive fill one line block puzzle game that’s completely free to play. Your brain becomes more active the more you play. During your commute, before you sleep… enjoy downtime with brain training. FEATURES ★ NO WIFI? NO PROBLEM! Enjoy wood puzzle anytime, anywhere! ★ FREE TO PLAY & Suitable for all ages. ★ NO penalties & time limits; You can enjoy Fill One Line Block Puzzle 2018 at your own pace! ★ STUNNING GRAPHICS: catchy sound effects with meerizing visuals suitable for everyone 4 levels of difficulty, with more 2000 games Don’t get too cozy—the puzzles get harder as you go along. Whether math is your bane or your forte, be sure to give this game a try. You’re sure to get hooked on these puzzles!