Star Battle
One star per row, column and region, and no two stars ever touch.
Free on Android · iOS coming soon
Solve.Duel.Dominate.
28 brain-bending number puzzles, from classic Sudoku to Star Battle and Kakuro. Solve them alone, or go live against real players in ranked duels, private rooms and knockout tournaments.
Get it free onGoogle Play
Coming soonApp Store
- Free to download
- Online modes never cost coins
- Plays offline too
1v1 DuelVictory +18
Daily streak7 days
Level upLv 9 · Platinum
- 28Puzzle types
- 5Difficulties, Easy to Genius
- 12Board themes
- 3Room modes: race, co-op, team
- 20Rating levels to climb
The library
28 ways to melt your brain
Every puzzle is staged from Easy to Genius. New to one? Tap it for the rules, an animated example and beginner tips.
Sudoku
The classic. Every row, column and box holds 1 to 9 once.
How to play →
Killer Sudoku
Dashed cages must add up to their clue, and no digit repeats in a cage.
How to play →
Thermo Sudoku
Digits climb along every thermometer from bulb to tip.
How to play →
Kropki Sudoku
White dots join neighbours one apart. Black dots join a digit and its double.
How to play →
Palindrome Sudoku
Every grey line reads the same forwards and backwards.
How to play →
Sandwich Sudoku
Edge clues give the sum of the digits between the 1 and the 9.
How to play →
XV Sudoku
An X joins two cells that sum to 10. A V joins two that sum to 5.
How to play →
Jigsaw Sudoku
Sudoku rules with the boxes swapped for jigsaw-shaped regions.
How to play →
Arrow Sudoku
The digits along each arrow add up to the circle it starts from.
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Search 9 Sudoku
Each arrow cell's digit says how many steps away the 9 is.
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Circle-Sum Sudoku
A compact 3×3. Each circle is the sum of the four cells around it.
How to play →
Calcudoku
Cages with a target and an operator. Make the maths work, no repeats.
How to play →
Kakuro
A crossword made of sums. No digit repeats within a run.
How to play →
Sumplete
Delete numbers until every row and column hits its target.
How to play →
Kakurasu
Shaded cells score their position. Hit every row and column total.
How to play →
Futoshiki
A Latin square with greater-than signs between neighbours.
How to play →
Skyscraper
Place towers. Edge clues count how many you can see from there.
How to play →
One Up
Walls split rows into segments. A segment of n cells holds 1 to n.
How to play →
Number-Path
Thread 1 to the last number through neighbouring cells.
How to play →
Star Battle
Two stars in every row, column and region, and stars never touch.
How to play →
1-Star Battle
The gentle start: one star per row, column and region.
How to play →
3-Star Battle
Three stars per line on a big board. For the brave.
How to play →
Hitori
Shade the repeats away. Shaded cells never touch, white cells stay connected.
How to play →
Kurodoko
Each number counts the white cells it can see in four directions.
How to play →
Galaxies
Split the board into galaxies that spin symmetrically around their dot.
How to play →
Fields
Paint every cell green or blue. Each field holds exactly one clue.
How to play →
Nonograms
Row and column clues paint a hidden picture, cell by cell.
How to play →
Sliding Puzzle
Slide the tiles back into place. Pictures, numbers, your call.
How to play →
See it in motion
Watch them click into place
Every puzzle has its own rules and its own “aha”. Here are three of them, solving themselves.
Nonograms
The numbers are runs of painted cells. Follow them and a picture appears.
3
5
6
6
6
6
6
5
3
0
22
44
9
9
7
5
3
1
Sliding Puzzle
Memorise the picture, watch it shatter, then slide every tile home.
Remember it0
The online arena
Real players. Real stakes. Zero coins.
Every online mode is free to play. Your coins are only ever spent offline.
Live preview
Bronze›
Silver›
Gold›
Platinum›
Diamond›
Master
Your level is earned per puzzle, so a Sudoku master can still be a Kakuro rookie.
Make it yours
12 board themes.
Midnight to paper white.
Neon for late nights, paper for bright days. Every puzzle has its own theme picker, and your choice is remembered.
5
3
6
7
2
1
9
8
6
7
8
1
9
5
3
2
9
2
3
4
6
7
8
5
4
6
7
1
257
6
8
5
3
9
2
4
4
3
9
1
8
6
6
1
2
7
4
6
4
1
9
2
8
2
8
3
5
1
7
9
Deep Night
Built for players
Every detail, tuned for flow
The small things that keep you in the zone, from the first easy board to your hundredth Genius clear.
Easy
Medium
Hard
Pro
Genius
Easy to Genius
Five difficulty levels on every puzzle, each one a ladder of stages. Clear a board, unlock the next, and keep climbing.
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Pencil notes
Jot candidates, whittle them down, commit when you're sure.
Lives & hints
Three lives per board keep the pressure honest, and a hint is there when you're truly stuck.
No signal needed
Plays offline
Solo puzzles work anywhere: on the train, on a plane, in the middle of nowhere.
Cloud save
Back up your progress and pick up where you left off on a new phone.
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ArrowsClickBackspace
Keyboard & mouse
On a tablet or Chromebook? Plug in a keyboard: type digits, move with the arrows, click any cell.
NeoSolver wants a rematch
Rematch?
Instant rematch
Lost by a second? Ask for a rematch and go again on a fresh board.
Where to play
In your pocket. Soon on every phone.
The game lives in the app. This site is just the shop window.
Android
Google Play
- Phones and tablets
- Every puzzle, every online mode
- Free to download
iPhone & iPad
App Store
In the works
iOS buildOn its way
Coming soonApp Store
Hear first on Discord1+7★49+2
Your next personal best is one tap away.
Free to download. No account needed to play offline, and online play never costs a coin.
Get it free onGoogle Play
Coming soonApp Store