Become a tennis champion with Mario Tennis: Ultra Smash! Mario's beloved crew returns for frantic tennis action, with new additions! Up to 4 players can compete simultaneously, and the addition of new moves makes the flow smoother than ever! When you feel confident in your skills, go head-to-head with players online. Defend against high balls, grab power-ups to grow in size, and become the best tennis player in the Mushroom Kingdom!