Daily Kaodoku is a daily dose of this unique online puzzle game. If you’re a fan of sudoku, then you should definitely check this crazy twist on the classic game. Instead of putting a unique number in each space, you have the option of 9 different faces that you can choose. This puzzle game follows the same rules as sudoku with similar mechanics. Play every day for a different game and choose from easy, medium, hard, and expert. You even have the option of printing out the game if you’re a classic kind of person. This is a casual game to let you train your brain without the stress of a timer or a scoreboard. Daily Kaoduku is the perfect game for someone who wants a daily challenge!