Galaxies – Spiral Symmetry

Enclose each star and split the board into point-symmetric galaxies. Every puzzle has one solution and is solvable by pure logic—no guessing. One quiet puzzle a day.

Enclose each star and divide the board into point-symmetric “galaxies.” Galaxies (Spiral Galaxies / Tentai Show) is a quiet, elegant logic puzzle where a single rule opens up surprising depth. Every puzzle has exactly one solution—and can always be solved by pure logic, never by guessing.

ONE SIMPLE RULE Divide the grid into galaxies so that:

• each galaxy contains exactly one star,
• each galaxy is symmetric (looks the same rotated 180°) about its star,
• every cell belongs to one galaxy. That’s all you need to know. Tap a star, then colour the cells into its galaxy.

SATISFYING BECAUSE IT’S ALWAYS FAIR Every board is verified by a built-in solver to have exactly one solution, and we ship only puzzles that never require a guess. If you’re stuck, there’s always a next logical step waiting to be found.

FEATURES

• Point-symmetric “galaxy” logic (Tentai Show / Spiral Galaxies)
• Every puzzle unique and solvable by logic alone—no guessing
• Four difficulties: Easy, Medium, Hard, Expert
• A shared Daily puzzle with streaks and a calendar
• Simple tap-and-colour input, with Undo, Clear and Hint
• Optional “show mistakes” to gently help when you’re stuck
• Records and stats to see your progress
• A calm, night-sky design (dark mode at heart)
• Fully offline. No account required
• English and Japanese

WHO IT’S FOR

• Sudoku and nonogram fans looking for their next logic puzzle
• Solvers who want to reason it out—never guess
• Anyone who wants a quiet moment before bed or on the commute
• People who enjoy a small daily habit
• Fans of Nikoli-style pencil puzzles

PRIVACY & PEACE OF MIND Galaxies plays fully offline. No account, no servers, nothing sent anywhere. Your progress stays on your device. Play quietly, at your own pace.