Sudoku: Classic & Killer

Enjoy the logic behind every number. Play Classic Sudoku and Killer Sudoku on a calm, paper-inspired board.

Classic Sudoku
Choose from six difficulty levels, from Sprout for first-time players to Master. Sprout includes a helper that points out useful places to look. Solve puzzles to unlock more levels.

Killer Sudoku
Follow the familiar row, column, and box rules while making each dotted cage add up to its total. Explore four difficulty levels and an illustrated guide to the rules.

Hints that explain
Select a square and open a hint to see the reasoning unfold on the board, one step at a time. Killer hints also walk through cage arithmetic.

A puzzle for every day
Take on a daily challenge. Use the calendar to revisit past dates and mark the days you finish.

Play your way
Use pencil notes and undo, or select a number first to fill several squares in a row. Adjust sound and vibration. Earn points, review completed games, and track your progress.

Puzzles are generated on your device, so you can play without an internet connection. No account or sign-in is required. Available in Korean and English.