The Simon game is an electronic handheld device that tests memory and pattern recognition through sequences of lights and sounds. Players must watch and repeat random light patterns by pressing the corresponding colored pads in the correct order. The game starts at a steady pace, with sequences gradually increasing in complexity as play progresses. It can be enjoyed solo or with others, challenging players to achieve the longest correct sequence possible. The classic Simon gameplay involves observing, memorizing, and accurately replicating each light pattern to advance through levels.