Game Description:Just when you thought the Sudoku craze couldn't get any crazier, along comes Dr. Sudoku with a new, more powerful prescription for a completely engrossing Sudoku experience. Whether you're a seasoned Sukoku vet with an unquenchable thirst for the game or a curious newcomer ready to be hooked, the good doctor's readied hours of addictive fun! Solve 1,000 puzzles in 20 difficulty levels, ranging from beginner-friendly cupcakes to mind-melting brain-benders. Create your own puzzles with the game's built-in editor, or let the Doc show you the ropes in tutorials you can access for advice mid-puzzle. You can even ask Dr. Sudoku for help solving puzzles found outside the game.