Cheats for SEGA Superstars Tennis

Alex Kidd	Complete "Get A High Score!" in the "Space Harrier" stage.
Golden Axe	Complete "Speed Rings" in the Sonic the Hedgehog stage.
NiGHTS	Complete "Monkey Ball Keep Up" in the Super Monkey Ball stage.
OutRun	Complete "Hit Justice Shots" in the "Virtua Squad" stage.
Puyo Pop Fever	Complete "Doubles Match" in the Super Monkey Ball stage.
Space Harrier	Complete Tournament Singles in the "Space Channel 5" or "Virtua Squad" stage.
Virtua Squad	Complete "Hit The Big Zombies!" in the "Curien Mansion" stage.

Alex Kidd	Complete Mission #1 in Alex Kidd's World
Amy Rose	Complete Mission #2 in Sonic The Hedgehog's World
Gilius	Complete Mission #1 in Golden Axe's World
Gum	Complete Mission #12 in Jet Grind Radio's World
Meemee	Complete Mission #8 in Super Monkey Ball's World
Pudding	Complete Mission #1 in Space Channel 5's World
Reala	Complete Mission #2 in NiGHTs' World
Shadow The Hedgehog	Complete Mission #14 in Sonic The Hedgehog's World

Golden Axe	Complete all Super Monkey Ball missions.
NiGHTS	Complete "Doubles Match" in the NiGHTS stage.
OutRun	Complete "Doubles Match" in the OutRun stage.
Sonic The Hedgehog	Complete "Singles Match" in the Sonic the Hedgehog stage.

Puyo Pop Fever	Complete "Get A High Score!" on the "Puyo Puyo Fever" stage.
Space Harrier	Complete "Get A High Score!" in the "Space Harrier" stage.
Virtua Squad	Complete "Get A High Score!" on the "Virtua Squad" stage.