How many Sudoku Worlds are there?

There are 18 unlocked worlds, ranging from 4×4 picture puzzles to advanced 9×9 and overlapping-grid variants.

Can I still play classic Sudoku?

Yes. Classic Sudoku and the Daily Challenge remain available from the Sudoku Worlds landing page.

Do I need an account?

No. You can explore worlds and play classic Sudoku directly in your browser without an account.

All games

A puzzle universe

Sudoku Worlds

18 unique worlds. 5 difficulty levels.
A new puzzle adventure every time.

Start Playing Play Classic Sudoku Daily Challenge

No login · Play instantly · Phone, tablet, and desktop

All worlds unlocked

Choose Your World

Start with pictures and small grids, explore new constraint rules, or jump straight into advanced logic. Every world includes all five difficulty levels.

StarterAnimal SafariPicture Sudoku with friendly animals4×4Picture Sudoku StarterColor KingdomMatch shapes and colors across the kingdom4×4Shape and color Sudoku BeginnerSchoolyardLearn classic Sudoku with numbers 1–44×4Classic mini Sudoku BeginnerCity BuilderRead skyline clues and raise a 6×6 city6×6Skyscraper Sudoku ExplorerOcean ExplorerNavigate irregular reef regions6×6Jigsaw Sudoku ExplorerSpace MissionDiagonal Sudoku across the galaxy6×6Diagonal Sudoku AdventurerDinosaur IslandExplore irregular fossil territories9×9Jigsaw Sudoku AdventurerFantasy KingdomClassic 9×9 Sudoku in an enchanted realm9×9Classic Sudoku ThinkerDetective MysteryUse clue dots to crack the case9×9Kropki Sudoku ThinkerScience LabTest number sums with X and V clues9×9XV Sudoku StrategistRobot FactoryTune consecutive numbers along machine lines9×9Renban Sudoku StrategistCyber CityFollow neon lines through the grid9×9German Whispers Sudoku AdvancedWorld ExplorerRead edge clues to chart every route9×9Sandwich Sudoku AdvancedTreasure VaultCrack the cages and unlock the vault9×9Killer Sudoku ExpertEngineering LabIncrease values along thermometer paths9×9Thermo Sudoku ExpertLogic ObservatoryTrace arrow sums through the stars9×9Arrow Sudoku MasterMaster GridCombine two advanced rule systems9×9Hybrid Sudoku UltimateQuantum UniverseExtreme overlapping-grid logic5 overlapping 9×9 gridsSamurai hybrid Sudoku

Distinct worlds

Picture grids, classic Sudoku, and advanced constraint variants.

Difficulties each

Choose a welcoming start or the hardest challenge in any world.

Accounts required

Pick a world and play directly in your browser.