10 Games Like Sudoku — Free Logic Puzzles to Play Online
Sudoku is one of the most popular logic puzzles in the world. Howard Garns’ 1979 “Number Place” went global after Nikoli rebranded it as Sudoku in 1984 and Wayne Gould pushed it to The Times of London in 2004. If you love Sudoku’s “stare at a grid until the logic reveals itself” satisfaction, this list covers 10 of the best games with similar deductive engagement.
The short answer: the closest games like sudoku are Picross (a grid you fill from number clues) and Minesweeper (numbers that let you deduce hidden mines). Mastermind and Wordle scratch the same itch with codes and words instead of digits. All ten below are free to play in your browser.
Key takeaways
- Picross and Minesweeper are the nearest relatives: grids, number clues and no guessing on a well-made puzzle.
- Mastermind and Wordle swap the grid for feedback-driven elimination.
- Lights Out, the 15 Puzzle, Tower of Hanoi and Sokoban trade deduction for planning ahead.
- Nim is the odd one out: a two-player logic game with a known winning strategy.
What makes a game “like Sudoku”?
Sudoku has a few traits that fans tend to look for elsewhere. The puzzle is fully visible, so there’s no luck once it starts. Every move follows from rules you can check yourself. A good puzzle has exactly one solution, and you can reach it without guessing.
No game on this list matches all of that perfectly. Each entry notes which part of the Sudoku feeling it delivers: grid deduction, elimination, or careful planning.
1. Sudoku (the original)
9×9 grid. Digits 1-9 in each row, column, and 3×3 box, each exactly once. Pure logical deduction. Play Sudoku.
Our version has six difficulty levels, from Easy through Medium, Hard, Very Hard and Insane up to Inhuman. Puzzles are generated with a unique solution, and it tracks your errors and time. Undo, Hint and Check buttons help when you’re stuck, and highlighting shows conflicts in the same row, column or box. If you’re new, our Sudoku strategies for beginners guide covers the first techniques to learn.
2. Minesweeper
Microsoft’s bundled puzzle. Numbers indicate adjacent mines. Deduce safe cells. Play Minesweeper.
It’s the closest relative on the list. Every number is a constraint on its neighbours, and you solve the board by combining constraints, just as you combine row, column and box rules in Sudoku. The big difference is that Minesweeper sometimes leaves you with a forced 50/50 guess. Ours has the three classic sizes: Beginner (9×9, 10 mines), Intermediate (16×16, 40 mines) and Expert (30×16, 99 mines). The first click is always safe.
3. Picross (Nonogram)
Number clues describe rows and columns. Deduce which cells are filled. In printed and console nonograms, the solution usually reveals a pixel image. Play Picross.
If you like Sudoku’s row-and-column logic, Picross is the one to try first. Each clue lists the runs of filled cells in order, with at least one gap between runs. Ours offers 5×5, 10×10 and 15×15 grids, a Cross mode for marking cells you know are empty, and a mistake counter. Its puzzles are randomly generated patterns rather than pictures. Our how to play Picross guide explains the overlap trick that cracks most rows.
4. Mastermind
1970 code-breaking game. Deduce a 4-peg color code from feedback. Play Mastermind.
After each guess, a black marker means right color in the right spot and a white one means right color in the wrong spot. You keep a mental list of what’s still possible and cut it down with each guess, much like pencil marks in Sudoku. Ours has Easy (6 colors, 10 tries), Medium (6 colors, 8 tries) and Hard (8 colors, 8 tries), plus an option that allows duplicate colors.
5. Wordle
5-letter word puzzle. Similar elimination logic — use each guess’s feedback to rule out possibilities methodically. Play Wordle.
You get six tries per word, and our version lets you start a new word whenever you like instead of waiting for the next day. It needs vocabulary as well as logic, so it’s less pure than Sudoku. For a bigger elimination puzzle, Quad Word runs four Wordle-style boards at once with nine guesses.
6. Lights Out
Toggle tiles and neighbours. Turn all lights off. Linear-algebra-in-disguise puzzle. Play Lights Out.
Clicking a cell flips it and its four neighbours. The order of your clicks doesn’t matter and clicking a cell twice undoes it, so the real question is which set of cells to press. Ours goes from 3×3 up to 7×7, with Hint and Undo buttons.
7. 15 Puzzle
1880 sliding-tile classic. Rearrange 15 numbered tiles into order. Spatial reasoning + logical planning. Play 15 Puzzle.
This one is more about planning than deduction: you solve it row by row and learn to park tiles out of the way. Ours includes the 3×3 (8-puzzle) for a warm-up and the 5×5 (24-puzzle) for a longer session.
8. Tower of Hanoi
1883 mathematical puzzle. Move disks between pegs. Recursive logic problem. Play Tower of Hanoi.
The minimum number of moves for n discs is 2ⁿ − 1, and our version shows that minimum next to your move count (31 for five discs). You can play with 3 to 8 discs, or 10. Once you spot the recursive pattern, the puzzle becomes a test of keeping your place.
9. Sokoban
Push boxes onto targets. Pure spatial logic. PSPACE-complete computational complexity. Play Sokoban.
You can push boxes but never pull them, so one careless push into a corner ruins the level. Like hard Sudoku, it rewards thinking several moves ahead. Ours has 15 levels with Undo and Restart.
10. Nim
Ancient strategy game with a complete mathematical theory. The optimal strategy depends on the binary XOR of pile counts. Play Nim.
Unlike everything else here, Nim has an opponent. Ours lets you play an Easy or Hard CPU or a second person, in Normal (last stone wins) or Misère (last stone loses) mode. Once you learn the XOR rule, see whether you can beat the Hard CPU.
Games like Sudoku compared
| Game | Main skill | Luck involved? | Best for |
|---|---|---|---|
| Picross | Grid deduction from number clues | None once started | Sudoku fans who want a new grid |
| Minesweeper | Grid deduction from neighbour counts | Occasional forced guess | Quick, tense rounds |
| Mastermind | Elimination from feedback | Random secret code | Methodical thinkers |
| Wordle | Elimination plus vocabulary | Random word | Word lovers |
| Lights Out | Pattern logic | None once started | Short sessions |
| 15 Puzzle | Planning | Random shuffle | Spatial thinkers |
| Tower of Hanoi | Recursive planning | None | Pattern spotters |
| Sokoban | Planning ahead | None | Long, slow puzzles |
| Nim | Strategy vs an opponent | None | Players who want a rival |
How to choose your next logic puzzle
- You love the grid itself: start with Picross, then Minesweeper.
- You love pencil marks and ruling things out: try Mastermind on Hard, then Wordle or Quad Word.
- You love “aha” moments: Lights Out and Tower of Hanoi both have a hidden pattern that changes how you play once you find it.
- You want something long and slow: Sokoban’s later levels and Insane or Inhuman Sudoku.
- You want a five-minute break: Beginner Minesweeper, 3×3 Lights Out or a 5×5 Picross.
Sudoku math: the numbers
- Total valid grids: 6,670,903,752,021,072,936,960 (~6.67 × 10²¹). Calculated 2005.
- Minimum unique-solution clues: 17. Proven 2012 via exhaustive computer search.
- NP-completeness: generalized n²×n² Sudoku is NP-complete.
The mathematics of Sudoku article on Wikipedia goes deeper into how these figures were worked out.
Why Sudoku endures
- No math required. Despite using digits, it’s pure logic.
- Universal symbols. 1-9 transcend languages.
- Scalable difficulty. Easy through Diabolical.
- Solo-only. No need for opponents.
- Pause-friendly. Easy to put down and pick back up.
Three more number logic puzzles on Dinogame
For close relatives of sudoku, Jigsaw Sudoku swaps the square boxes for irregular regions in 9×9 or 6×6 grids. Samurai Sudoku joins five overlapping 9×9 grids into one long puzzle. Hitori works the other way round: you shade cells so no number repeats in a row or column. All three have daily puzzles.
Frequently asked questions
What is the closest game to Sudoku?
Picross (also called nonograms) is the closest. You fill a grid using number clues for each row and column, and a well-made puzzle has one logical solution. Minesweeper is a close second.
Do you need math for Sudoku?
No. The digits are just symbols, and you could play with letters or colors instead. The same goes for Picross and Minesweeper, where the only math is counting.
Is every Sudoku solvable without guessing?
A well-constructed Sudoku has a unique solution you can reach by logic alone. Random or badly made grids may need guessing. The puzzles in our Sudoku are generated with a unique solution.
What is the easiest Sudoku variant?
4×4 Sudoku with 2×2 boxes. It’s trivial for experienced players, but it introduces the rules quickly, which makes it a good start for kids.
What is the best technique for hard Sudoku puzzles?
Naked pairs and triples, X-Wing and Swordfish. These advanced patterns beat brute-force guessing. Our advanced Sudoku solving guide walks through them.
Are these games like Sudoku free?
Yes. All ten games on this list are free to play in your browser with no download or signup.
The takeaway
If you want more of Sudoku’s quiet deduction, start with Picross and Minesweeper, then branch out to Mastermind and Lights Out. When your brain needs a break from grids, the Chrome Dino game is a one-button change of pace. For more logic puzzles, see our best browser logic games, or read our best puzzle games roundup.
