Mario Power Tennis continues after the success with Mario Tennis. What's new to this game is the power play of offensive and defensive that can be devastating to use against your opponents. What's also new is the courts and the minigames that has been added to bring more depth to this like adding obstacles like crocodiles while playing through the set.
With such a success with this game, the Wii version has been faithfully rendered for this game essentially like "Wii Sports" by swinging the Wii Remote like a tennis racket.