Sudoku Quest and its 470 plus puzzles were designed keeping a timer in mind.
The timer tests a player's ability to think fast and challenges them beyond that of a regular Sudoku game.
Extra time can always be bought using Cash when it gets it runs out.
You can always play a timer free mode of Sudoku by completing our Daily Puzzles on our Facebook page.
https://www.facebook.com/playsudoku/