One-Click Sudoku

Launch Sudoku in one click from the toolbar and play offline anytime.

One-Click Sudoku is a lightweight Sudoku game that opens from the Chrome / Edge toolbar in one click. Once installed, you can play without an internet connection. There is no account creation, login, or other setup hassle. Generate a new puzzle, choose the clue count, enter a seed to reproduce the same board, add notes, use red notes, undo and redo moves, reveal hints, show the solution, and save or load your progress. Saved games are local JSON files that you explicitly download and load yourself. One-Click Sudoku does not show ads, require payments, make external network connections, or collect personal data. Your language preference is stored locally in the browser, and gameplay information is never sent outside the browser.