Controls

You play by dragging paths. Press on a colored square and drag toward its matching square — with your finger on a phone, or a held mouse button on a laptop — and a line follows your pointer through the cells.

Two rules shape every level:

• Drawing a path connects a matching pair. Drag from one colored square, through empty cells, to its twin. Drag back over your own path to shorten it, or start again from a square to redraw.
• No crossing, full fill is how you win. Paths can't overlap, and every cell must be covered. Drawing over another color erases that color's line, so plan the routes to share the board.

The counters track your progress: Lines shows how many pairs are joined, Fill shows how much of the board is covered, and Moves counts your path draws.

Reset clears your paths and restarts the current board; New deals a fresh layout. A level is complete only when all pairs are connected and the board is one hundred percent filled, and the grid and color count rise across eight levels.

Tips

• Start in the corners. Corner cells can only be reached one or two ways, so paths that must pass through them are often forced, giving you fixed points to build the rest of the solution around.
• Fill, don't just connect. The shortest line between two dots usually isn't the answer, because you need every cell covered. Think about which color should take the long way around to mop up empty space.
• Follow the edges. Cells along the border have fewer neighbors, so tracing paths along the walls first tends to lock in large parts of the layout before you tackle the open middle.
• Redraw freely. There's no penalty for restarting a color, so if a path boxes you in, drag it again from its square and try a different route rather than fighting the whole board.
• Leave room for everyone. If one color sprawls across the center, another pair can get stranded. Keep paths compact where you can so every color has a way home.
• Aim for fewer moves. Once you can solve a level, try to do it in fewer path draws by planning each color's route before you start dragging rather than trial and error.

Frequently asked questions