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Play Flow Lines Online

Connect every matching color in Flow Lines with non-crossing orthogonal paths that fill the board, using compact 4-color, standard 5-color, and expert 6-color grids, step-by-step path drawing, backtracking, overlap feedback, coverage tracking, accessible cell labels, and restart. Play free with no account or download.

Choose board size

Single-player puzzle

No multiplayer mode

Your turnScore 0

How to play

Connect every matching color in Flow Lines with non-crossing orthogonal paths that fill the board, using compact 4-color, standard 5-color, and expert 6-color grids, step-by-step path drawing, backtracking, overlap feedback, coverage tracking, accessible cell labels, and restart. Choose a board size, make your move, and use Restart whenever you want a fresh game.

Strategy tips

  • Start with colors whose endpoints already suggest a constrained corridor.
  • Flows move only orthogonally and cannot share or cross a cell.
  • All pairs and every board cell must be filled, so use backtracking when a route leaves an isolated gap.

FAQ

Is Flow Lines free?

Yes. It is free to play in your browser.

Do I need an account?

No account or email is required.