Play Sudoku, Killer Sudoku, Binary Puzzle, Futoshiki, Kakuro and Codebreaker free in your browser. A new logic puzzle every four hours, with no ads.
Digigma was submitted to SlowDen by Digigma (Nightcall). SlowDen did not make this game - it is published here from the developer's own submission, added on 2026-09-24. It runs in the browser with no download, no install and no sign-up.