Spheroku

Spheroku, a new Sudoku game, has a board that is a sphere. The numbers are colored and the board is called a sphere. You must match colors rather than numbers. To memorize the colors, you will need to turn the sphere. The marker can be used to help you remember the colors. There are four levels of difficulty. You can use the cheat button to reveal correct colors if you are stuck. Your score will be slightly reduced if you do this. Can you become a Sudoku master?