Game
Fill Line : one line puzzle game
Looking for a way to sharpen your mind and relax at the same time? Welcome to Fill: One Line Puzzle Game, the minimalist brain teaser that’s taking the world by storm. The rules are simple: connect all the squares on the grid using a single, unbroken line. It sounds easy, but as the grids grow and the paths become more complex, you’ll need every bit of logic and spatial reasoning to find the solution. Why You’ll Love Fill: Thousands of Levels: From beginner-friendly 4x4 grids to expert-level challenges. Daily Brain Training Minimalist Design No Time Pressure Stuck? No Problem
- Genre
- puzzle
- Format
- HTML5 · Browser-native
- Install
- Not required — instant play
- Devices
- Desktop · Tablet · Mobile
- Price
- Free
About This Game
How to Play
-
1
Click Play Now
Hit the orange Play Now button on this page to launch the game in your browser.
-
2
Game loads instantly
The HTML5 game opens right inside the page — no installer, no plugin, no waiting on downloads.
-
3
Play & share
Use your keyboard, mouse or touch to play. Send the game to a friend with the share buttons.
Game Features
No Download
Plays directly in the browser — nothing to install or set up.
All Devices
Works on desktop, tablet and mobile — sync your session anywhere.
Always Free
Free to play — no paywalls, no locked levels, no hidden upgrades.
Instant Play
HTML5 engine loads in seconds — click and you're in the game.
