Free HTML5 browser 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

Game description provided by GameMonetize.

Fill Line : one line puzzle game

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Current source controls: Start at the designated block Drag your finger to fill all the remaining blocks The Catch You cannot overlap lines or revisit a block you rsquo ve already filled

Quick facts

Game details

Channel
Puzzle Games
Subcategory
Brain Games
Provider
GameMonetize
Platform
Web Browser
Orientation
portrait
Updated
July 21, 2026

Optional third-party video

Game walkthrough

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About Fill Line : one line puzzle game

Game description provided by GameMonetize.

How to play

Start at the designated block Drag your finger to fill all the remaining blocks The Catch You cannot overlap lines or revisit a block you rsquo ve already filled

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