Build up your Fever Gauge during rallies to unleash devastating Fever Shots. Customize your playstyle by equipping 30 distinct Fever Rackets—such as the Ice Racket to freeze courts, the Mini Mushroom Racket to shrink rivals, or the Shadow Racket for duplication tricks.

Choose from 38 playable characters—the largest roster in Mario Tennis history—and pair them with various Fever Racket combinations to discover unique tactical advantages and dominate both casual and competitive matches.

Enjoy Talking Flower play-by-play commentary in Tournament mode, complete skill challenges in Trial Towers, or play with wild Wonder Effects in Mix it Up mode. Hop online for customizable Online Rooms and competitive Ranked Matches, or use Joy-Con 2 motion controls in Swing Mode.

Embark on a story-driven adventure on a remote island where Mario and friends are transformed into babies by mysterious monsters. Help the cast relearn their tennis skills from scratch and battle monster bosses to restore everyone to normal.