Complete the indicated task in Planet Superstars mode to unlock the corresponding ball game.
Virtua Squad: Complete "Get A High Score!" on the "Virtua Squad" 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.
Characters
Complete the indicated task in Planet Superstars mode to unlock the corresponding character.
Alex Kidd: Complete Tournament Singles in the "Alex Kidd" stage.
Amy Rose: Complete Tournament Singles in the "Sonic The Hedgehog" stage.
Gilius Thunderhead: Complete Tournament Singles in the "Golden Axe" stage.
Gum: Complete Tournament Doubles in the "Jet Set Radio" stage.
MeeMee: Complete Tournament Singles in the "Super Monkey Ball" stage.
Pudding: Complete Tournament Singles in the "Space Channel 5" stage.
Reala: Complete Tournament Singles in the "NiGHTS" stage.
Shadow the Hedgehog: Complete "Tournament Doubles" in the "Sonic The Hedgehog" stage.
Courts
Complete the indicated task in Planet Superstars mode to unlock the corresponding court.
Sonic The Hedgehog: Complete Exhibition Singles in the "Sonic the Hedgehog" stage.
Outrun: Complete Exhibition Doubles in the "Outrun" stage.
NIGHTS: Complete all Jet Set Radio missions.
Golden Axe: Complete all Super Monkey Ball missions.
Stages
Complete the indicated task in Planet Superstars mode to unlock the corresponding stage.
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.