The 'Quick Settings' buttons will quickly set the Custom Game options for you. If this is your first game, press button. When you have mastered level 1, try the others.
To play a timed game, activate the clock, and move the slider to choose your game speed.
When you play a timed game, the clock will count downwards. You should play quickly to add time to your clock. If the clock reaches zero, the game ends. Using