Event mode:
To unlock Event mode, at the title screen hold B 1 for a few seconds.
Random character/court selection:
To randomly select a character or court, at the selection screen press X.
Taunt Opponent:
To taunt your opponent, while they have the ball press A or B.
Skip credits:
You can skip the credits after viewing them once by simultaneously pressing Start A.
Unlockables:
Unlock the following bonuses by performing the corresponding tasks:
BONUS – HOW TO UNLOCK
Star Cup – Win the three Normal Cup tournaments.
Moonlight Cup – Win the Rainbow Cup tournaments.
Special court options – Play a special court in the Special Cup.
Bowser court – Win the Special Cup Fire tournament in singles mode.
Mario Bros. court – Win the Special Cup Lightning tournament in doubles mode.
Hana-Chan – Win the Special Cup Fire and Thunder tournaments in singles mode.
Paratroopa – Win the three Normal Cup tournaments in doubles mode.
Petey Piranha – Win the Special Cup Fire and Lightning tournaments in doubles mode.
Shy Guy – Win all three Normal Cup tournaments in singles mode.
Wriggler – Win the Special Cup Fire and Lightning tournaments in singles mode.
Balloon Panic mini-game – Win the Flower Cup tournaments in singles mode.
Coin Collectors mini-game – Win the Mushroom Cup tournaments in singles mode.
Mecha Bowser Mayhem mini-game – Win the Mushroom Cup tournaments in singles mode.
Star characters:
To unlock a characters Star version, win all three Normal Cup tournaments with that character.
Ace difficulty:
To unlock Ace difficulty, win all Planet Cup tournaments in singles or doubles mode.
Change Yoshi’s defensive power shot color:
To change Yoshi’s defensive power shot to a different color, win all Flower Cup tournaments in doubles mode.
Challenges:
Unlock the following challenges by performing the corresponding tasks:
CHALLENGE – HOW TO UNLOCK
Infinite Balloon Panic Challenge – Complete Ultra-Hyper Panic.
Infinite Coin Collectors Challenge – Complete the Gold Rush Challenge.
Infinite Gooper Blooper Volley Challenge – Complete Master Blooper.
Infinite Terror Tennis Challenge – Complete Phrantic Phantoms.
Infinite Tic-Tac-Glow Challenge – Complete the Dazzle Shine Challenge.
Artist on the Court bonuses:
Unlock the following bonuses by performing the corresponding tasks:
BONUS – HOW TO UNLOCK
Bowser and Bower Jr.’s painting – Complete Diddy Kong’s painting within the time limit.
Diddy Kong’s painting – Complete Luigi’s painting within the time limit.
Luigi painting – Complete Mario’s painting within the time limit.
Yoshi’s painting – Complete Bowers and Bowser Jr.’s painting within the time limit.
Balloon Panic bonuses:
Unlock the following bonuses by performing the corresponding tasks:
BONUS – HOW TO UNLOCK
Super Panic level – Complete the Panic level.
Ultra-Hyper Panic level – Complete the Super Panic level.
Chain-Chomp Challenge bonuses:
Unlock the following bonuses by performing the corresponding tasks:
BONUS – HOW TO UNLOCK
Famished Chomp level – Complete Hungry Chomp level with the highest score.
Hungry Chomp level – Complete Perkish Chomp level with the highest score.
Coin Collectors bonuses:
Unlock the following bonuses by performing the corresponding tasks:
BONUS – HOW TO UNLOCK
Coin Challenge level – Complete the Gold Rush level.
Gold Rush level – Complete the Jackpot level.
Jackpot level – Complete the Fever level.
Gooper Blooper bonuses:
Unlock the following bonuses by performing the corresponding tasks:
BONUS – HOW TO UNLOCK
Master Blooper – Complete the Rival Blooper level.
Rival Blooper – Complete the Buddy Blooper level.
Mecha-Bowser Mayhem bonuses:
Unlock the following bonuses by performing the corresponding tasks:
BONUS – HOW TO UNLOCK
Iron Frame level – Complete the Aluminium Frame level.
Titanium Frame level – Complete the Iron Frame level.
Terror Tennis bonuses:
Unlock the following bonuses by performing the corresponding tasks:
BONUS – HOW TO UNLOCK
Pesky Poltergeists – Score 50 points in the “Goofy Ghosts” level within time limit.
Phrantic Phantoms – Score 150 points in the “Pesky Poltergeists” level within time limit.
Tic-Tac-Glow bonuses:
Unlock the following bonuses by performing the corresponding tasks:
BONUS – HOW TO UNLOCK
Dazzle Shine level – Score 75 points in the “Sparke Shine” level within time limit.
Sparkle Shine level – Score 50 points in the “Glimmer Shine” level within time limit.
Tic-Tac-Glow Challenge – Score 75 points in the “Dazzle Shine” level within time limit.