One Line Fill Puzzle is a simple and relaxing brain game where you must fill
the entire board using a single continuous line. Explore hundreds of clean,
minimal puzzle levels designed to improve focus and logical thinking.

Touch any tile and draw your line through every block without lifting your
finger. Think ahead and plan your path carefully—one wrong move and you’ll
have to try again. Each level is handcrafted to be challenging yet calming.

FEATURES:
• One-line puzzle gameplay that’s easy to learn
• Hundreds of unique levels with increasing difficulty
• Clean and minimal 2D design for full relaxation
• Undo option for difficult puzzles
• Smooth controls with satisfying animations
• Free to play with optional hints
• Works offline
• Supported by ads

HOW TO PLAY:
• Start from any block
• Draw a single line through all tiles
• Do not lift your finger until the board is completed
• Use hints if you get stuck

Perfect for quick play sessions, brain training, or calm puzzle solving.
Enjoy a peaceful puzzle experience anytime and anywhere!