This is a digital version of the traditional pen/paper game, Sudoku. The premise remains the same: the player must complete sequences from 1 thru 9 in both horizontal and vertical lines, as well as throughout the various square groups that make up the play field. This version adds a few features that are not found in a typical paper version. These include the ability to change the background and some of the sound effects.
The player can choose between boards that are 6x6, 8x8, 9x9, or 12x12. They can also choose the difficulty level of their game. While playing single-player, you can select either a setting that is either "casual" (unlimited time) or "timed" (limited time). There are also features that can be turned on to assist the player, such as: a 'pencil' to scribble in your options, something that informs you if you input an incorrect entry, or something that lists the remaining options for a box.
Multi-player adds more options. These are: co-op, duel, and team battle.