Pipe Link
Puzzle · 11 playsPipe Link
Connect every matching pair of colours and fill the whole board.
About Pipe Link
The wonderfully moreish flow puzzle. Draw a pipe between each pair of matching colours -- but there is a catch: your pipes cannot cross, and every single square must be filled when you are done. Levels grow from a gentle 5x5 to a tangled 9x9, and finding the one route that covers the whole grid is deeply satisfying. Free to play in your browser — no download, no sign-up.
How to Play
Drag from one coloured dot to its matching pair to lay a pipe. Pipes can't cross or overlap. Connect every colour AND cover every empty square to complete the level.
Tips & Strategy
Solve the corners first -- a corner cell has only two neighbours, so the pipe passing through it is often forced.
Edges are the next most constrained. Trace along the border and you'll usually find pipes with only one legal path.
Remember the real constraint isn't just connecting colours -- it's filling every square. A short direct route that leaves gaps is wrong even if the colours match.
If two pipes are fighting for the same region, the longer forced one usually wins; reroute the flexible one around it.