Single Line Block Fill Puzzle

Contains ads
Content rating
Everyone
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Content rating
Everyone
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About this game

Can you draw ONE perfect line to solve every puzzle?

Single Line Block Fill Puzzle is a pure logic brain teaser that challenges you to connect ALL walkable blocks using just ONE continuous line. No diagonal moves, no crossing obstacles, no repeated paths - just clean, satisfying puzzle solving.

HOW TO PLAY:
- Start from the marked beginning point
- Draw a continuous line through all green blocks
- Move ONLY up, down, left, or right (no diagonal)
- Avoid gray obstacle blocks
- Cannot revisit any block or cross your own path
- Complete when ALL walkable blocks are filled

KEY FEATURES:

400 HANDCRAFTED LEVELS
- Entry (5x5 grid) - Perfect introduction
- Basic (5x5 grid) - Build your foundation
- Easy (6x6 grid) - Step up your skills
- Normal (6x6 grid) - Solid challenge
- Medium (7x7 grid) - Test your logic
- Hard (7x7 grid) - Push your limits
- Expert (8x8 grid) - Master the puzzle
- Master (8x8 grid) - Ultimate challenge

PROGRESSIVE UNLOCK SYSTEM
- Start with Entry mode unlocked
- Complete 25 levels to unlock the next difficulty
- Track your progress across all 400 puzzles

PURE LOGIC GAMEPLAY
- No time pressure - think at your own pace
- No move limits - retry as many times as needed
- Clean, minimalist dark theme design
- Smooth touch controls with instant feedback

RELAXING YET CHALLENGING
- Perfect for quick brain training sessions
- Suitable for all ages - kids to adults
- Great for commute, breaks, or bedtime
- Train spatial reasoning and path planning

WHY PLAYERS LOVE IT:
- Simple rules, deep strategy
- Each level has a unique solution
- No ads interrupt gameplay
- Offline play - no internet required
- Regular updates with new levels

PERFECT FOR:
- Puzzle enthusiasts who love logic challenges
- Fans of classic pen-and-paper puzzles
- Anyone seeking a relaxing brain exercise
- Players who enjoy maze and path-finding games
- Kids learning problem-solving skills

Download now and start your puzzle journey! 400 levels of pure logic await.
Updated on
Apr 14, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
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No data collected
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Data is encrypted in transit
Content rating
Everyone
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App support

About the developer
wangzeqiu
wzeqiu@gmail.com
木洞镇庙垭村白云市组115号 巴南区, 重庆市 China 401338

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