Sudoku Online

Sudoku with other people on the board. Race a friend one on one, fill the same grid together in co-op, or join a tournament room that holds up to 1,000 solvers at once. Four difficulty levels, solo play when you want quiet, and it all runs free in the browser with no download and no signup.

• 1v1 races, shared-board co-op, and tournaments up to 1,000 solvers
• Four difficulty levels
• Solo play too
• Works on desktop and mobile

Play it free at https://foony.com/games/sudoku-online