Fill

About Fill

Fill is one of those games that's easy to start but tricky to put down. Fill every cell on the grid by drawing a single continuous line — all in your browser, no installs.

The game runs entirely in your browser, so your phone, tablet, or computer will all work fine. No downloads, no waiting around.

If Fill clicks with you, scroll down — there are more puzzle games on this page worth trying.

How to Play

1. Click the play area above — Fill loads right in your browser, no setup needed.
2. Controls: Click or drag from cell to cell. Your line must pass through every cell exactly once. The game may also show a quick tutorial when you first start.
3. Look at the whole board before making your first move. Rushing usually costs you.
4. If you get stuck, try undoing your last few moves rather than restarting from scratch.
5. Hit the fullscreen button (bottom-right corner) if you want a bigger view.

Tips & Tricks

• Start from a corner or edge cell — it limits your first move, which actually makes planning easier.
• If the grid has an odd-shaped area, figure out how to enter and exit that area first.
• Dead ends mean you started wrong. If you cannot reach the last few cells, restart and try a new path.
• On larger grids, mentally break the board into sections and figure out the order to visit each section.