Sudoku Up is a game that is composed of multiple collections of Sudoku puzzles. The objective of the game is to fill up the board with letters or numbers from 1 to 9 in such a way that each row, column, and sub grids contains the said numbers. The game features high quality graphics and very dynamic animations. The game play becomes more exciting through its clear and well-defined sound effects. Users can customize the game play by changing the grids, board type, background design, numbers or icons, and character. Players can pause and at the same time save the current game play. A bookmark option lets users continue a previous game. This feature also records valuable game statistics such as scores, level of difficulty, date, time, number of times of game play, and comments where gamers can include caption to add information about the game. If a gamer has having a hard time to finish the game, a hint option can be used. This option displays possible numbers that can be placed for each cell or highlights different cells that contains the same number.
The game has 5 levels of difficulty. The game can be printed which enables user to play the game anywhere even without the PC.