Sudoku is the most popular logic-based numbers game. The aim of the game is to place 1 to 9 into each grid cell so that each number can only appear once in each row, each column and each mini-grid.Features:3 modes: Classic, Popular, Xonix4 levels: easy, medium, hard and masterthemes: built-in some themes to changeAuto-save, redo and undo unlimitedPencil marksHints to help you complete hard onesRecord your game historyMore puzzles will be coming soon!