How to Play Cosmos Lines

1

Tap or click a numbered dot to start drawing a line.

2

Drag in a direction to extend the line across adjacent cells.

3

Each number shows how many cells the line must cover.

4

Lines must match the exact length — no more, no less.

5

You cannot cross or overlap other lines.

6

Use empty cells wisely to complete all lines.

7

Fill the entire grid correctly to win the level.

Details

This online Cosmos Lines game runs directly in your browser. There is no download, no signup, and it works smoothly on both mobile and desktop devices. Solve handcrafted levels, unlock new challenges, and enjoy a clean, satisfying puzzle experience. Your progress is saved automatically so you can continue anytime.

Game Features

Play Cosmos Lines online for free in your browser.
Simple drag-based controls for mobile and desktop.
Dozens of handcrafted puzzle levels.
Clean, minimal UI with smooth drawing animations.
Hint system to help when you get stuck.
Automatic progress saving.
Satisfying line completion and glow effects.

Controls

Drag on mobile to draw lines between cells.
Use mouse click and drag on desktop.
Release to lock the current line.
Tap a completed line to redraw it.
Use undo to revert your last move.
Use reset to restart the level anytime.

Why Cosmos Lines Is Good for Your Brain

Cosmos Lines enhances logical thinking, pattern recognition, and strategic planning. Players must calculate exact paths, avoid overlaps, and think ahead to use limited space efficiently. It’s a great way to train your brain while enjoying a calm and visually pleasing puzzle experience.

Tips to Win at Cosmos Lines

1

Start with shorter lines to reduce complexity.

2

Look for constrained areas where only one path is possible.

3

Avoid blocking space needed for longer lines.

4

Plan the full path before drawing — not just the next step.

5

Redo lines early if they limit your options.

6

Use hints wisely when stuck on difficult levels.

7

Practice makes perfect — patterns become easier over time.