Sudoku Maniac is a free online Sudoku game where you can choose between two different levels of play. The levels are Easy and Hard; if you are an amateur then you should play the Easy level and if you are a seasoned player then you can play the Hard level. When you start the game you will find the classic Sudoku grid. The classic Sudoku grid is the most used grid in the world. There are variants but they are not used as much. The grid can be divided into uniform areas, and then some other areas are defined; all of them following the rules of Sudoku; there must be no repetition of the numbers within the regions. Here is a recap: Sudoku requires that you fill the numbers 1 to 9 in the 3X3 grids that also make up the larger 9X9 grid. In the larger grid, the numbers go from 1 to 9 across the columns and the rows. If it is a variant with other areas defined, then the numbers within those areas may or may not go from 1 to 9. However, all these follow one simple rule; there must be no repetition of any number within those defined areas. That said, you start this particular game with 10,000 points and you have a clock that is counting your time in seconds. The points are deducted for every second that you take. This means that if you solve the puzzle in a shorter time, you get more points since few will have been used up. When you click on the squares, a circle of the numbers 1 to 9 will appear and you click on the number you want; to erase a number click on the X selection. This is a great free online Sudoku game for you to try out, whether you are a pro or an amateur.