Spiral Galaxy

Tentang permainan

Free online tentaisho symmetry puzzle. Draw 180-degree symmetric galaxies across the cosmos. 29 levels from beginner to expert.

How to play

How do you play Spiral Galaxy?

Tap a glowing dot to select it as your galaxy center, then tap empty cells to grow its region. Every cell you add automatically gets its 180-degree mirror partner added too. Cover every cell so each galaxy is symmetric, connected, and contains exactly one dot.

What are the rules of tentaisho (spiral galaxy)?

Partition the entire grid into galaxies. Each galaxy has exactly one dot at its rotational center and must be perfectly 180-degree symmetric around that dot. All cells must be covered with no overlaps, and each galaxy must be one connected shape.

Is Spiral Galaxy free to play?

Yes, Spiral Galaxy is 100% free to play online in your browser with no download required. It works on desktop and mobile devices.