Rotate the pipes. Light the network.
Every piece is twisted out of place — tap to rotate them so water flows from the source to every lamp, with not a single leak. Satisfying to fiddle with, exactly one solution per board. Free, instant, unlimited — no registration required.
What is Pipes?
Pipes (also known as Net) is a rotation logic puzzle. The grid is a plumbing network — straights, elbows, T-junctions and lamps — that has been scrambled by rotating every piece randomly. Your job is to turn each piece so that the network becomes one connected system fed by the source in the middle, with no open ends anywhere.
Water flows live as you play: connected pieces glow amber, so you always see how much of the network is alive. Every board has exactly one solution, and sizes run from a quick 5×5 to a knotty 9×9. Play unlimited boards or the shared Daily Challenge with streaks.
The rules
- Tap a piece to rotate it clockwise; right-click or long-press turns it back.
- The source (amber dot in the middle) feeds the network.
- Pieces connect when their ends meet each other — an end pointing at a wall or a pipe side is a leak.
- Win by lighting every piece with no open ends.
Frequently asked questions
- Is Pipes free?
- Yes — completely free, supported by ads. No download, no login.
- Does every board really have one solution?
- Yes. The generator verifies each board has exactly one leak-free, fully-connected arrangement before serving it — so careful logic always gets you there.
- Do I ever need to guess?
- No — border pieces, corners and lamps anchor the deduction, and every step can be reasoned out. That's the same no-guess bar all Funduk Games puzzles meet.
- Is there a daily puzzle?
- Yes — a shared 7×7 daily board with streaks, plus unlimited random boards.
Quick solving tips
- Start at the edges. Border cells can't point outward — a straight on the edge must run along it, an elbow in a corner is forced.
- Lamps are anchors. A lamp has one connector; once its only neighbor with a free end is known, its direction is forced.
- No loops allowed. The finished network is a tree — if a rotation would close a ring, it's wrong.
- Follow the light. The amber flow shows what's already right; grey regions tell you where the puzzle still needs work.
See worked examples in the Pipes strategy guide.
More logic puzzles
If you enjoy Pipes, try our other no-guess logic games: Nonogram (picture cross), Minesweeper (no-guess boards), CrownGrid and Trail.