The Simon game is a memory challenge where players need to repeat sequences of lights and sounds. The game starts when the player presses the "Let's start" start button, prompting Simon to light up one of its colored buttons and play a corresponding tone. The player must then press the same button. Each time the player successfully repeats the sequence, Simon adds another random button to it, making the sequence longer and more challenging. The player continues to repeat the ever-growing sequence, relying on memory to recall the order of lights and sounds. If the player makes a mistake by pressing the wrong button or pressing in the wrong order, the game ends. The goal is to achieve the longest sequence possible.