StarLine: One Line Puzzle

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Content rating
Everyone
10+
Downloads
Content rating
Everyone
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About this game

One single line. One whole world.

StarLine is a one-line drawing puzzle. Connect every line without lifting your finger, and without tracing the same line twice. The rule fits in a sentence. Putting it down is the hard part.

■ 1,000 stages, every one verified
Forest Tales, A Day in the City, Ocean Voyage, Journey Through Space. Every stage was generated and then actually solved by a solver before it shipped, so there are no impossible puzzles and no filler. Difficulty runs from Beginner to Extreme, and each world climbs the same curve.

■ 25 hidden constellations, taken from the real sky
Orion, Cassiopeia, Ursa Major and more. The stars sit where they sit in the sky — real right ascension and declination, projected onto the board. Complete one and its story opens up: when to look for it, what makes it worth finding, and the names of its brightest stars. They unlock as you clear stages. Nothing to buy.

■ Today's one-line puzzle
One puzzle a day, the same one for everyone, everywhere. Clear it and share your time and star rating exactly as it happened. Your streak keeps count.

■ 24 pictures to finish
Every stage resolves into a picture — a fox, a lighthouse, a rocket. Collect them in the gallery.

■ Plays anywhere
No sign-up, no account, no server. The whole game runs offline, and your progress stays on your phone.

■ Also inside
· Three stars for a clean solve — no mistakes, no undos
· COMBO and PERFECT streaks
· 27 achievements
· Hints that give you the next dot, not the answer
· Bonus stages against the clock
· Special rules: required dots, forbidden dots, fixed start and end

Every graphic and every sound in StarLine is generated in code. No stock art, no stock audio.

Terms of Service: https://sites.google.com/view/metaestarlineuse
Privacy Policy: https://sites.google.com/view/metaestarline
One line, one world. 1,000 one-stroke puzzles and 25 real constellations.
Updated on
Sep 10, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Location, App activity and 2 others
  • This app may collect these data types
    Location, App activity and 2 others
  • Data is encrypted in transit
  • Data can’t be deleted

What’s new

First release.

- 1,000 one-stroke puzzles across four worlds
- 25 hidden constellations, built from real star positions
- Today's puzzle: one a day, the same one for everyone
- 24 pictures to complete and collect
- No sign-up, no account, and it all works offline

Thanks for playing. Anything feels off? onnaruteam@gmail.com
Content rating
Everyone
Learn more

App support

About the developer
(주)온나루
onnaruteam@gmail.com
유성구 반석로 32, 105호(반석동, 양지타워) 유성구, 대전광역시 34069 South Korea
+82 10-4423-9445