Rail Pool is a Nikoli-style loop puzzle created by Martin Ender in 2022. The grid is divided into polyomino regions. Draw a single non-intersecting loop through every cell. Clue numbers in each region indicate lengths of straight line segments within that region.

How do you solve a Rail Pool puzzle?

Start with extreme clues. A clue of 2 means a 2-cell straight segment must lie entirely within that region. Look for boundaries between regions to constrain where straight runs can occur.

What are the rules of Rail Pool?

1) Draw a single closed loop through every cell exactly once. 2) The loop must not cross itself. 3) Clue numbers in each region indicate lengths of straight segments within that region.

Is Rail Pool free to play?

Yes! Rail Pool on GameZipper is completely free. Play instantly in your browser with no download required. 30 levels from beginner to expert.

Rail Pool - Logic Loop Puzzle Game

Goal: Draw a single closed loop through every cell.
Clues: Numbers indicate lengths of straight line segments within that region.
Rules: Loop visits each cell once, never crosses itself, forms one closed path.

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Level 1 / 30

Rail Pool - Free Online Loop Logic Puzzle

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