Flow
How to play
- Drag from a coloured dot to its matching twin to lay a pipe of that colour.
- Pipes cannot cross or overlap another pipe.
- You win when every pair is connected AND every square is filled.
- Drag back over your own pipe to erase it, or tap a colour dot below the board to clear it.
Strategy & tips
- Start with the corners and edges — they have the fewest ways in and out.
- A pair on the same row or column rarely connects in a straight line; you usually need the detour to help fill the grid.
- If a pipe would trap an empty square with only one opening, reroute — every cell must be reachable.
- Full coverage is the real goal: connecting all pairs the short way often leaves gaps and does not solve the level.
- Use Undo freely to test a route without losing your other pipes.
FAQ
How do you win at Flow?
Connect every pair of same-coloured dots with a pipe AND fill all squares. Connecting the pairs alone is not enough — the whole grid must be covered.
Can pipes cross each other?
No. Each square holds at most one pipe. If you drag into another colour’s pipe it stops; drag back over your own to shorten it.
How many levels are there?
There are 26 hand-made levels that get bigger and trickier — nine 5×5, nine 6×6 and eight 7×7 boards. Your furthest level is saved locally.
Is it free and account-free?
Yes. Flow plays free in your browser with no download and no sign-up.
Does it work on mobile?
Yes. Drag with your finger from dot to dot. The board scales to fit phones, tablets and desktop.