Let your mind take a break and refresh itself to the mind-soothing effects of Sudoku Relax 4. The popular "Sudoku Relax" title is coming out with a sequel, "Sudoku Relax 4". You can enjoy the effect of soft and warm snow in new "Sudoku Relax". Choose from EASY, NORMAL, or HARD modes with over 300 puzzles. Exercise your brain and wind down to the relaxing gameplay and music. Solving puzzles unlocks new backgrounds and music tracks. The game contains 3 backgrounds and 3 music tracks. You can choose to pause the game at any time and continue playing at your convenience. Simple touch controls make playing easy.