How to play Pipes
Tap a pipe to rotate it clockwise. Join every pipe in a single connected network with no loose ends, no pipes pointing outside the board and no closed loops. Green tiles have matching connections on every side; the whole network must also be connected.
Undo reverses a rotation. Hint correctly rotates one tile. Reset puzzle restores the starting rotations. Daily puzzles reset at midnight UTC; practice offers 4×4, 5×5 and 6×6 boards.