One line from 1 to the end, covering every cell.
Three rules, that's all.
· Pass the numbers in order, starting at 1
· Leave no empty cell behind
· Dark cells are walls
■ Today's Puzzle
Everyone in the world solves the same puzzle each day. Same puzzle means times are finally comparable. Results share without spoiling the answer.
■ Ranked Run
Hidden numbers, no finish line. The deeper you go, the less time you get and the more numbers disappear. Solve clean and your leftover time carries into the next board. How far can you go?
■ Duel
Same board, head to head — first to 10 wins. Play a friend by room code, match with a stranger, or take on the AI (Beginner, Normal, Expert).
■ 21 trophies
Korean, English, Japanese, Chinese (Simplified/Traditional), Vietnamese.
Ratings & Reviews
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Levels are here. They go up even on a bad run.
• Level — fills with every puzzle you solve. Never goes down
• From puzzle 11 the board shape changes — blocked centers, scattered pillars
• Rankings now reset weekly. A fresh chance every week
• Duel records, duel ranking, and 7 new trophies
• Fixed: the back button could wipe the board you were solving
• Leaving a duel mid-race now counts as a loss
Version 5.1.1
The developer, Jiyoung Bae, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
Jiyoung Bae
Size
64.9 MB
Category
Puzzle
Compatibility
Requires iOS 13.0 or later.
iPhone Requires iOS 13.0 or later.
iPad Requires iPadOS 13.0 or later.
iPod touch Requires iOS 13.0 or later.
Mac Requires macOS 11.0 or later and a Mac with Apple M1 chip or later.