Mario & Luigi: Superstar Saga is a turn-based RPG.  The game begins when Bowser invades the Mushroom Castle and steals Princess Peach's voice, replacing it with an evil laugh. Mario and Luigi rush to help her, but Bowser escapes to the Beanbean Kingdom.  Mario and Luigi follow Bowser to the Beanbean Kingdom  but they are captured and their hearts removed. They get help from Princess Daisy and work together to stop Bowser and save the Beanbean Kingdom. Gameplay: The game combines RPG gameplay with action. Players control Mario and Luigi, each with their own skills and abilities. Players must use these skills to defeat enemies, solve puzzles, and explore the world. The game features the Bros. Moves system, where players press buttons in the correct order to perform special moves.