Cosmos Lines

Calm Visuals, Demanding Logic

Cosmos Lines sets a classic path-connecting puzzle against a soothing cosmic backdrop of stars and glowing nodes. The goal on every level is to connect all matching points on the grid using unbroken lines that never cross each other and cover every open cell. Early boards feel almost trivial, but as the grid expands and more colored pairs are added, finding a layout where every path fits becomes a genuine spatial logic challenge.

Controls: Click and Drag to Draw

Click or tap a colored node and drag across the grid toward its matching node to draw a path between them. Release to lock the line in place, and redraw any path by dragging from its node again if you need to adjust your route. A level is solved once every node pair is connected and the entire grid is filled without any lines overlapping.

  • Start with the pair that has the fewest possible routes between them — it constrains your other paths the most.
  • Leave flexible, open pairs for last since they can usually route around whatever space remains.
  • Think about filling the entire grid, not just connecting dots — empty cells often mean an incomplete solution.
  • If you get stuck, redraw one path through a different route rather than restarting the whole level.
  • Look for corners and edges first, since paths through them usually have fewer possible directions.

More Relaxing Logic Puzzles

If you enjoy Cosmos Lines' calm approach to spatial logic, try the flowing tile challenges of Lines to Fill for a similar path-drawing formula. Discover more puzzle games to unwind with on our all games page.

More Games