This UK based game was originally derived from the famous US Powerball model, although those who play Thunderball will be aware the original version of the game is no longer quite the same. What does remain the same is the popularity of the draw, and if you opt to play Thunderball you will have that opportunity 3 times a week. The days of the draw are Wednesday, Friday and Saturday, although many who play Thunderball will recall the years prior to 2010 when this was a mere bi-weekly game. 2010 also saw 5 balls added to the draw and the total guess range for the main draw is currently 1 to 39, with those who play Thunderball being asked to pick 5 in total from 1 to 39 and also 1 extra number (The Thunderball) from between 1 and 14. To land the jackpot players must correctly select all 5 main draw numbers and also the Thunderball. 2010’s final change to the original format saw an increase in the jackpot, with the already decent £250,000 being replaced with a mouth watering £500,000 figure. Those who do decide to play Thunderball should be aware the game is not all about the excellent jackpot, with many smaller prizes available. The lesser wins will always be enhanced should the player correctly select the Thunderball.