The Game's Opening
The game's opening begins with Mario and Luigi playing a match against Wario and Waluigi. The Mario Bros. win the match and celebrate as Wario and Waluigi complain about their loss. The next day, Wario & Waluigi see a picture of the Mario/Luigi team on the "Peach Dome Tournament" board and are furious to see that their opponents have knocked them out of the running. Wario & Waluigi vandalize the Mario/Luigi team picture, but the Buckethead police catch them in the act and pursue a chase to arrest them. Wario & Waluigi attempt to run for cover and try to hide in what they think is a janitor's closet, but the closet has no floor, and the two fall into a training room. As Wario wonders, "What's this dump?", Bowser approaches them and offers an alliance to get revenge against the Mario Bros.. After hours of training and seeing others playing their tennis matches, they carry out their plot to crash the "finals tournament" later that evening at the Peach Dome.
As Mario and Luigi are about to play a match against Yoshi and Donkey Kong during that time, Bowser takes the picture of Yoshi and DK and replaces it with Wario and Waluigi. Bowser shows up behind the picture. Peach, Toadsworth, and all the attendees are baffled as to why Wario, Waluigi, and Bowser invaded the Peach Dome to crash the tournament without warning. But Wario and Waluigi wasted no time catapulting Bob-ombs at the Mario Bros. However, Mario & Luigi reflect the same Bob-Ombs back at them with their tennis rackets. Bowser launches a Bullet Bill from his airship at them, and Mario knocks it back with his racket, causing a giant explosion. This revealed that the airship had an enormous amount of Bob-Ombs, and everyone couldn't believe the painful result to come - especially Peach who noticed the "massive Bob-Omb explosion threat" firsthand.
Bowser's airship starts to descend out of control, and unfortunately has Wario and Waluigi in its crosshairs. Wario and Waluigi try to get out of the way, but to no avail. The airship crashes down and creates the massive explosion with Bowser, Wario, and Waluigi being the "victims", as a result of their Peach Dome invasion attempt completely foiled.
Additional screenshots
Characters
Starting Participants
| Character | Skill type | Offensive Power Shot | Defensive Power Shot |
|---|---|---|---|
| Mario | All Around | Iron Hammer | Spin Jump Return |
| Luigi | All Around | Squeaky Mallet | Poltergust Return |
| Peach | Technique | Super Peach Spin | Sweet Kiss Return |
| Daisy | Technique | Wonder Flower | Flowerbed Return |
| Wario | Power | Thunder Cast Shot | Ultra-Hand Return |
| Waluigi | Defense | Whirluigi | Swimming Return |
| Bowser | Power | Fire Breath | Spinning Shell Dash |
| Donkey Kong | Power | Barrel Cannon Blast | Boomerang Banana Return |
| Diddy Kong | Speedy | Acrobatic Banana | Barrel Jet |
| Yoshi | Speedy | Rainbow Flutter | Rolling Egg Return |
| Bowser Jr. | Tricky | Magic Paint | Rolling Brush Return |
| Koopa Troopa | Speedy | Water Bomb | Water Shell Dash |
| Boo | Tricky | Boo Blast | Boo Brigade Return |
| Shy Guy | Technique | Lightning Spear | Spear Dance Return |
Unlockable Participants
| Character | Skill type | Offensive Power Shot | Defensive Power Shot |
|---|---|---|---|
| Fly Guy | Tricky | Tornado Twist | Tornado Return |
| Paratroopa | Technique | Energy Ball | Sky Dive |
| Wiggler | Defense | Anger Management | Flutter Return |
| Petey Piranha | Power | Sludge Racket | Piranha Swingback |
Courts
| Name | Picture | Gimmick | Ball Speed | Bounce | Availability |
|---|---|---|---|---|---|
| Peach Dome Hard Court | A standard court, with no gimmicks or add-ons. | Normal | Strong | Default | |
| Peach Dome Clay Court | A standard court, with no gimmicks or add-ons. | Slow | Weak | Default | |
| Peach Dome Grass Court | A standard court, with no gimmicks or add-ons. | Fast | Weak | Default | |
| Luigi's Mansion Court | Ghosts appear when the ball bounces on one of the tiles. Ghosts harass the players, slowing them down. The Garbage Can Ghost, if it appears, occasionally throws bananas, which can slip and mess up the player. The lightbulb tile on the opposing court removes all the ghosts. | Fast | Normal | Default | |
| Wario Factory Court | There are red and blue arrows sliding across the top of the net. If an arrow is hit, the side with the corresponding court lines will have the conveyor belt underneath running in the direction of the arrow. The back of the court is a conveyor belt running to the side while the front has one running up or down. Hitting the same direction the arrow is pointing will make the conveyor belt faster and hitting the arrow in the opposite direction will make the conveyor belt slower. | Fast | Strongest | Default | |
| Delfino Plaza Court | There are three circles with a the picture of a Piranha Plant. If a ball lands on any of the circles, a Piranha Plant will spit goop onto the field. The goop slows movement. The goop can be cleaned if the player stands on a F.L.U.D.D. picture. | Normal | Weak | Default | |
| Gooper Blooper Court | If a ball lands on a movable tile, the movable tile slides in the direction the arrow is pointing to. Water can be revealed. If the ball lands on the water, it is considered an out. | Fastest | Normal | Default | |
| DK Jungle Court | Red and Green Klaptraps crawl on the top of the net. If a player hits one of them, the Klaptrap jumps off and runs into the opponent's leg. More Klaptraps can be stuck to the opponent. Klaptraps slow the bitten player's speed and make lunges shorter. Klaptraps are removed when the opposing player hits the thunderbolt picture on the opposite of the court. | Slow | Normal | Default | |
| Bowser's Castle Court | The stage tilts from the weight of the players, which can cause them to have difficulty moving or staying in place. It can be difficult to hit the ball in this court. | Fast | Strong | Unlockable | |
| Mario Classic Court | Classic Mario Bros. enemies walk on the middle lines of the court. They can block and mess up the players. Freezies freeze the court when they reach the middle. All enemies are stunned by the POW block (except for the freezie, which is just destroyed). Side-steppers take two hits from the POW block to get stunned and fighter flies are immune to the POW block if they are flying. Once stunned, they can get removed if a player collides into it. Defeated enemies can help the player obtain a glowing racket, which is for power shots. | Slow | Strongest | Unlockable |
Glitches
Immunity to Offensive Power Shot Effects
For some strange reason, Mario or Luigi rebounding an Offensive Power Shot
with their Offensive Power Shot may not push them back/reverse their
controls. However, Mario or Luigi still slow down from Offensive Power
Shots such as Petey Pirahna's Sludge Racket.
Messed-Up Graphics
Strangely, when a human player's Boo uses a defensive shot, the multiple Boos look odd. Computer Boos do not have this problem.