North American box art.
|ESRB PEGI CERO ACB|
The gameplay is generally the same as past entries with Simple rules stripping the extraneous rules. Matches are available up to 4 players and the game supports motion controls with a single joy-con. The game also has a story mode with many varied moves.
The main new mechanic is the energy meter. Players can use their generated energy meter to perform Zone Shots which are powerful shots the player can aim using motion controls. If the player hits the opposing player's racket straight on, it gets damaged and if it gets damaged 3 times, it will break and that player must forfeit the match. To counter this, the opposing player can use Zone Speed using up their own energy meter to slow down everything to hit the ball. if a player fills up their entire energy meter, they can spend it all to perform a special shot that can destroy the opposing player's racket in a single shot. The only way to avoid breaking the rackets is to use the Block move which is a perfectly timed swing that reflects the shot to the other side with no damage. To fill up the energy meter, the player can perform risky Tricky Shots though it will generate with long rallys.
In the Story mode, the characters moves on a map and must face various challenges on their journey. Luigi has awakened some sort of evil Tennis deity and Mario must save him with Tennis
The game features multiplayer with random players friends as well as online tournaments. Participating in online tournament can earn special outfits and characters.
The game includes more than 15 playable characters. They are spilt into 6 different classes. Characters in bold can be unlocked through online tournaments during a certain month. If players don't unlock them in time, the character will be free for everyone on the 1st on the following month.
|Toad||Yoshi||Koopa Troopa (July 2018)|
|Rosalina||Boo||Blooper (August 2018)|
All stages must be unlocked through Adventure mode apart from Marina Stadium.
|Marina Stadium (Clay)||Marina Stadium (Grass)||Marina Stadium (Hard)|
|Marina Stadium (Night)||Bask Ruins||Piranha Plant Forest|
|Mirage Mansion||Snowfall Mountain||Savage Sea|