SUD💜KU is a free and open source Sudoku game that aims to be simple to play yet featureful and visually polished. Features <ul> <li>Play Sudoku!</li> <li>Markup where numbers could go.</li> <li>Highlight numbers to better examine the board.</li> <li>Validate the current board to find mistakes.</li> <li>Smooth and sleek animations.</li> <li>Full theming support.</li> <li>Local leaderboard to track your best times per difficulty.</li> <li>Auto-save the game so you can pick back up where you left off.</li> <li>Fully Free and Open Source Software!</li> </ul>