Sega Superstars Tennis Codes -

Bonus characters:
Complete the indicated task to unlock the corresponding character.

Alex Kidd: Win the Special Stage in the Bronze Doubles tournament. 
Amy: Win the Bronze Singles tournament. 
Gilius: Defeat Dr. Robotnik in the special stage during a Singles tournament. 
Gum: Win the Silver Doubles tournament. 
MeeMee: Win the Silver Singles tournament. 
Pudding: Win the Gold Doubles tournament. 
Reala: Win the Bronze Doubles tournament. 
Shadow: Win the Gold Singles tournament. 

Special stages:
Play against Dr. Robotnik: Earn over 9 to 10 million points in a Singles tournament. 

Bonus courts:
Complete the indicated task to unlock the corresponding court.


Jet Set Radio: Win level 1 of the Jet Set Radio game. 

Score Attack mode:
Successfully complete all missions in a mini-game to unlock the Score Attack mode for that particular mini-game.