Improving Mental Capabilities. Players must exercise critical thinking & make snap decisions based on insufficient information because the game places a strong emphasis on strategy. Plarummy mareyers consider a variety of options before making a move, which improves their analytical and problem-solving skills. Reducing stress and enhancing memory. Also, because players have to remember which cards have been played and which are still in their opponents' hands, rummy promotes memory retention, a skill that can lead to better cognitive function in daily life.