A classic 9×9 Sudoku board with a browser player and a game-specific guide. Fill each row, column and 3×3 box with 1–9. Hosted and adapted by RadiantGames from the credited MIT WebGames project.
Sudoku — RadiantGames was submitted to SlowDen by RadiantGames (host and MIT adaptation). SlowDen did not make this game - it is published here from the developer's own submission, added on 2026-10-18. It runs in the browser with no download, no install and no sign-up.