Block Fill | One-Line Fill Puzzle Game

How to Play

Identify the starting block (usually marked) and plan your route. Your goal is to visit every single empty square on the board.

You must fill the grid in one continuous motion. You cannot overlap your path or re-enter a square that has already been filled.

As you progress, the grid shapes become more irregular. Use the walls and dead ends as logical anchors for your path.

Once every square is colored and the entire grid is full, the level is complete. Progress through increasingly complex geometries!

If you see a square that has only one or two open neighbors, it's likely the beginning or the end of your path. Plan accordingly.

A common technique is to "trace" the perimeter of the shape before moving into the center, preventing yourself from getting trapped.

Before you make your first move, try to trace the entire line with your eyes. Look for "bottlenecks" where only one path is possible.