Unlocking Star Characters:
Win the Champions Cup of the World Open with any character to unlock that character as a star, with enhanced abilities.

Unlockable Characters:

Unlock the following characters by performing the corresponding tasks:

CHARACTER – HOW TO UNLOCK
Baby Mario – Complete Super Mario Tennis Special Game 1-3.
Baby Peach – Complete the Pro Rings level in the Ring Shot Special Game.
Dry Bowser – Complete the Inksplosion level in the Ink Showdown Special Game.
Luma – Complete the Superstar level in the Galaxy Rally Special Game.

Unlockable Costumes:

Unlock the following costumes by performing the corresponding tasks:

COSTUME – HOW TO UNLOCK
Fire Mario – Turn two characters into star characters.

Unlockable Courts:

Unlock the following courts by performing the corresponding tasks:

COURT – HOW TO UNLOCK
Galaxy Arena Crystal Court – Win the Final Cup in the Star Open tournaments.
Galaxy Arena Morph Court – Win the Final Cup in the Star Open tournaments.

Unlockable Tournaments:
Unlock the following tournaments by performing the corresponding tasks:

TOURNAMENT – HOW TO UNLOCK
1-Up Mushroom Cup – Win all four cups of the World Open.
Banana Cup – Win the Flower Cup tournament.
Champions Cup – Win the Banana Cup tournament.
Final Cup – Win the Shell Cup tournament.
Flower Cup – Win the Mushroom Cup tournament.
Ice Flower Cup – Win the 1-Up Mushroom Cup tournament.
Shell Cup – Win the Ice Flower Cup tournament.

Unlockable Difficulties:
Unlock the following difficulties by performing the corresponding tasks:

DIFFICULTY – HOW TO UNLOCK
Ace difficulty – Win the Final Cup tournament.
Pro difficulty – Win the Champions Cup tournament.