Zompero is a game where you, the user, play against an imaginary opponent. You and the opponent each start the game with an equal amount of points. You enter a number between 1 and 5, the number of points to bet, and guess whether or not the result will be an odd or an even number. Then you play the game. When each round is started, you will see a countdown, 3.....2.....1. You will then see the number that you chose represented in small shapes on the left side of the screen, and a random number of small shapes (between 1 and 5) for the opponent on the right side of the screen. The sum of shapes for both of you is added together. If this sum is even and you guessed "even" then you win. If the sum is odd and you guessed "even" then you lose. The same rules apply for if you guessed "odd". You can play over and over until either you or your opponent reach 0 points. When this occurs, you can begin a new game.