Sudoku Monsters

*Hint* The box color represents the number of possible moves, with red indicating no possible move left. Classic old school Sudoku with a twist, you get to handle the monsters, with three difficulty levels and Hints. How to Play: The game contains 9 small boxes within 9 big boxes, each small box has to be filled with a monster, with no repeating monster in big box, and also a monster should not be repeated horizontally or vertically.