Tap to rotate
Tap to rotate
Pipe rotation puzzle — rotate each pipe to connect the source to the drain. A fresh layout every game.
Each cell of the grid holds a pipe piece. Tap a cell to rotate it 90° clockwise.
Connect the top-left source to the bottom-right drain. Connected pipes light up.
Finish to advance: the grid grows from 4×4 to 5×5 and 6×6, and stays 7×7 from the fourth board on. Each level has its own time limit, and that limit gets shorter with every level you clear.
Goal: clear as many levels as you can before the clock runs out.
The clock is the real opponent. The first board gives you 48 seconds, and every board you clear takes 1.2 seconds off the next one's limit: board 10 allows 37.2 seconds, board 20 allows 25.2, board 30 allows 13.2 and board 40 only 1.2 — so no run can go past 40 boards. Unused time does not carry over, so racing an early board banks nothing; what matters is finishing each board inside its own limit, and from board 4 on every board is the same 7×7 size, so the limit is the only thing that gets harder.
Start from the fixed points — the source in the top-left and the drain in the bottom-right — and work along the edges. A pipe that carries the flow can never point into a wall, which rules out orientations quickly, and the hidden route the board was built from only ever steps right or down, so the flow never needs to double back up or to the left. Connected pipes light up, so trace the lit line from the source and turn the tile just past its end until it accepts the flow.
Not every tile matters. Only one route is laid down when a board is made; the other pieces are random decoration, so you can leave them pointing anywhere. Any connected line from source to drain clears the board, even one that uses decoration pieces and differs from the route the board was built around, so if a lit side branch happens to reach the drain, take it. If the lit line stops and nothing next to its end can accept the flow, back up one tile and turn that one instead.