Sudokum is a free online Sudoku game that allows you to select the level at which you want to play; when the game loads you have to choose whether you want the Easy, Medium, or Hard levels. This is a flexible game allowing all sorts of players to enjoy it; whether you are an amateur or a professional, you will still get to enjoy this lovely game. There is only one feature that may be odd for some people; all the numbers are in roman numerals. Believe it or not, there may be people who cannot write the numbers 1 to 9 in roman numerals; that is a pun, because almost everybody can write the numbers in roman numerals. The only thing is that it will bring a slight hesitance and the player will take longer than he would if the numbers were in normal numerals. There is a timer which will count the number of second it will take you to complete the game. The game is also good for training purposes; when you want to fill in a number, you click on the square and then click on the numbers on the pad to your right. If the number you have clicked can be accepted into the square, the number will be filled in green. However, if the number cannot go into the square, it will be filled with a red color. This will tell you that it is wrongly input. This way you get to learn how to play the game. This is a free online Sudoku game that will help learners get used to the game, and it will also keep the professionals busy, when they play the hardest level; they too can hone their skills since they will learn how to play the harder games. This is a great way for you to become better when you play Sudoku.