Constellations: Star Logic

Place the stars of the night sky. Every row, every column and every coloured region holds the same number of stars, and stars never touch – not even diagonally. Reason it out, and watch the stars join into a constellation with its own name. 280 puzzles, each with exactly one solution you can reach by logic alone.

Support

Found a bug, stuck on a purchase, or have an idea? Email [email protected] – please include your phone model and, for a puzzle question, the difficulty and level number.

Frequently asked questions

How do I place a star?

Tap a cell once for a dot (no star here), twice for a star, a third time to clear it. Drag across cells to dot many at once. With Auto-dots on (Options), the cells a star rules out get faint dots for you.

I bought a pack but the levels are still locked.

Open any locked level to get to the Purchases page and tap Restore Purchases. Make sure you are signed in to the store with the same Google or Apple account you used to buy it.

I got a new phone. Is my progress saved?

Purchases are tied to your store account and can be restored on any device. Your progress and best times are stored only on the phone you played on and are not synced.

Do I ever need to guess?

No. Every puzzle has exactly one solution and can be solved by logic. If you are stuck, the Hint button first shows where to look, then explains why, and only then makes the move.

What do the free and paid levels include?

All 40 Easy levels (including a five-level tutorial) and the first 10 levels of Medium, Hard and Expert are free. The rest come in one-time packs of 35 levels, or all at once. There are no ads and no subscriptions.

What data does the app collect?

Only anonymous gameplay statistics and crash reports, and you can switch them off in Options – see the privacy policy.