Thunderball costs £1.00 to play and draws take place on Wednesdays, Fridays and Saturdays.
To play you choose five main numbers between 1 and 39 and one Thunderball between 1 and 14
To win the minimum cash prize you just have to match the Thunderball. In order to win big you need to match all five numbers and the Thunderball.
The top Thunderball prize is up to £500,000.