Pipe Flow

Pipe Flow is a free pipe puzzle you can play in your browser. Rotate tiles to route water from the inlet to the drain without leaks on grids from 5×5 to 9×9. Daily puzzle, locked tiles, undo, and move-based bests.

Also known as: pipe puzzle, plumber puzzle, connect the pipes

Free pipe connection puzzle online: route water from inlet to drain on 5×5–9×9 grids. Daily puzzle, locked tiles, undo, and move-based bests in your browser.

How to play Pipe Flow

  1. Daily is default; Classic picks Easy 5×5, Medium/Daily 7×7, or Hard 9×9 (?daily=0).
  2. Tap a rotatable tile to turn it 90° clockwise — one move. Locked tiles (🔒) do not turn.
  3. Water flows from the inlet along matching openings. Win when the drain is reached with no leaks to empty cells or open borders.
  4. Undo reverses the last rotation. Reset restores the scrambled start. Hints rotate one tile toward a correct orientation and count as a move (assisted runs are flagged).
  5. Autosave keeps board, moves, and time until win or reset.

Fewest moves wins; ties break on faster time. Assisted clears (any hint) are noted on the best pill. One record per daily date or Classic difficulty on this device.

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