There is no one surefire strategy to win the 20 number game. However, there are some general tips that can help increase your chances of success. First, it is important to understand the odds of the game. The odds are usually about 1 in 5 million when playing with a standard deck of cards. This means that you have a very small chance of winning. Therefore, it is important to play as many games as possible in order to increase your chances of winning. Secondly, it is also helpful to choose numbers that are not commonly chosen by other players. This will give you a better chance of having all 20 numbers called out during the course of the game. Finally, it is also important to keep track of which numbers have already been called out during the game. This information can be used to help you make more strategic choices when choosing your own numbers.