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Free Sudoku Games Online
8 free sudoku games, all
playable straight in the browser.
Classic 9×9 sudoku is here alongside the variants that change one rule and, with it, the whole solving technique. Killer Sudoku adds caged sums, so arithmetic does the work a given digit normally would. Diagonal Sudoku adds two more regions to the constraint set. Samurai overlaps five grids at the corners, and Mini Sudoku shrinks the board to 6×6 for a puzzle you finish in a couple of minutes.
Alongside them sit the number-logic puzzles that share sudoku’s single-solution discipline without sharing its grid: Kakuro, which is a crossword built from sums; Futoshiki, where inequality signs between cells do the work of givens; and Hitori, where you solve by blacking cells out rather than filling them in.
Every board is generated with a seeded random number generator, so Replay hands you the identical grid and New Puzzle reliably gives you a different one. Nothing is timed unless you want it to be, and no puzzle needs guessing — each one has a single solution reachable by logic alone.
Sudoku questions
Do these sudoku puzzles always have one solution?
Yes. Every board is generated and checked for a single solution, so you never have to guess between two valid answers.
What is the difference between Killer Sudoku and classic sudoku?
Killer Sudoku starts with no given digits. Instead, dotted cages each carry a sum, and the digits inside a cage must add to it without repeating, so you work out the givens yourself before the normal sudoku logic begins.
Can I play sudoku here without an account?
Yes. Nothing on this site asks for a sign-up. Your progress and best times are stored in your own browser, not on a server.
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