Fill One Line

Fill One Line is a logic drawing game where you have to use a single stroke to cover the screen full of obstacles. The game has 4 modes: Beginner, Medium, Expert, and Master, with more than 100 levels from simple to difficult. You can choose any level to start; there is no need to start from level 1.

The difference of Fill One Line

• Only one stroke: No interruptions and no retracing of the old path.
• No time limit: Think and draw freely.

Draw a continuous line

Use only one stroke from the starting and ending points. The goal is to cover 100% of the grid without leaving empty cells.

• Start from the corner: Follow the edge to avoid getting stuck.
• Draw a loop: Avoid the black hole and then back to cover the remaining cell.
• Use the Undo button: When drawing a mistake, fix it.
• Observe the map: Find the location of obstacles and escape routes.

Simple Controls

• Mouse/Touch: Use the drag-and-drop method to create a line.
• Reset Button: Clear the old line, try again from the beginning.

Fill One Line is a fun IQ test. I was stuck at level 45 because of a small blank; what about you? Join the game now and become a logic master!

Drawing Games

Logic Games