Open Sudoku is a simple open source sudoku game. it's the successor of the discontinued OpenSudoku.




Stillgrid is described as 'Free online sudoku with classic, X-Sudoku, jigsaw, and killer variants, where difficulty is graded by the solving techniques each puzzle actually requires' and is a Puzzle Game in the games category. There are three games similar to Stillgrid for Web-based, Android, iPhone, Android Tablet and iPad. The best Stillgrid alternative is Open Sudoku, which is both free and Open Source. Other Stillgrid like games are Sudoku.best and Daily Sudoku: Calm Logic.
Open Sudoku is a simple open source sudoku game. it's the successor of the discontinued OpenSudoku.




Play sudoku for free at sudoku.best! Our online game offers both dark and light mode options, as well as five different difficulty levels: easy, medium, hard, expert, and master.


A clean, ad-free Sudoku app designed for focused puzzle solving. Play classic 9×9 Sudoku with daily challenges, offline support, notes, statistics, and automatic progress saving.



