A Star Battle logic puzzle
Free the frozen stars
Travel from the equator to the North Pole one deduction at a time: seven frozen biomes, a guardian constellation at the end of each, and Polaris waiting at absolute zero. No ads, no lives, no time limits.
On the App Store on January 3, 2027
For iPhone and iPad. A Mac version will follow.
Try it here
One rule, five stars
Every row, every column and every floe of ice holds one star. No two stars touch, not even at a corner.
Tap a cell once for frost, where no star can be. Tap it again for a star, and once more to clear it.
There is exactly one solution, and logic alone finds it. You never have to guess.
Inside the game
Ninety degrees of latitude
The game
Cold, calm and fair
A journey to the North Star
Cross seven biomes, from the Harbor to the Polar Night. Boards grow from 5×5 to 14×14 and from one star per row to three. At the end of every biome its guardian waits: a real constellation or star of the northern sky.
Hints that teach
The Compass never just reveals a cell. It points to the next logical step, names the technique and explains why it works. The Navigator's School teaches the techniques in short lessons.
A new puzzle every day
The Daily Course is free forever: gentle on Monday, fierce by Sunday. Ice Cubes cover the days you miss, so your streak goes on.
The real night sky
Every star you free is a real star under its official IAU name. It waits for you in the Atlas with a chart and a short card, every fact checked against sources such as NASA and NOAA.
Calm and cold
No ads, no lives, no timers and no game over. Frosted boards, the northern lights and a soundscape for every biome. Plays offline with no account, and iCloud keeps your progress in sync.
Free, then one purchase
The Daily Course, the first three biomes, the Navigator's School and iCloud sync are free forever. NorthStar Pro is one purchase, not a subscription: the rest of the Expedition up to Polaris, Drift with more than 10,000 puzzles, the Daily Course archive and an unlimited Compass.
Twenty-five seconds of ice
Watch the stars break free
The App Store preview, recorded in the game.
Questions
What is Star Battle?
A logic puzzle on a square grid split into regions, here floes of ice. You place stars so that every row, column and floe holds the same number of them and no two stars touch. It is also known as Queens and Two Not Touch.
Is NorthStar free?
Free to download, and the Daily Course, the first three biomes and the Navigator's School stay free forever. NorthStar Pro is a single purchase that unlocks everything else. There is no subscription and there are no ads.
When does it come out?
On January 3, 2027, on the App Store for iPhone and iPad. Until then the public beta on TestFlight is open. A native Mac version will follow.
Will I have to guess?
Never. Every puzzle is checked by computer to have exactly one solution that logic alone can reach.
Does it play offline?
Yes. NorthStar needs no account and no connection. When your devices are online, iCloud keeps your progress in sync between them.
Which languages does it speak?
English, German, French, Italian, Spanish, Japanese and Russian.
Free the frozen stars
On the App Store on January 3, 2027
For iPhone and iPad. A Mac version will follow.