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Bonus stages:
-------------
Successfully complete the indicated task in Planet Superstars mode to unlock the
corresponding stage:

Alex Kidd: Successfully complete "Get A High Score!" in the "Space Harrier"
stage.

Outrun: Successfully complete "Hit Justice Shots" in the "Virtua Squad" stage.

Space Harrier: Successfully complete Tournament Singles in the "Space Channel
5" or "Virtua Squad" stage.

Virtua Squad: Successfully complete "Hit The Big Zombies!" in the "Curien
Mansion" stage.

Bonus courts:
-------------
Successfully complete the indicated task in Planet Superstars mode to unlock the
corresponding court:

Golden Axe: Unknown.
NIGHTS: Unknown.
Outrun: Successfully complete Exhibition Doubles in the "Outrun" stage.
Puyo Pop: Unknown.
Sonic The Hedgehog: Successfully complete Exhibition Singles in the "Sonic the
Hedgehog" stage.

Bonus characters:
-----------------
Successfully complete the indicated task in Planet Superstars mode to unlock the
corresponding character:

Alex Kidd: Successfully complete Tournament Singles in the "Alex Kidd" stage.
Amy Rose: Successfully complete Mission 2 in the "Sonic The Hedgehog" stage.
Gilius Thunderhead: Successfully complete Mission 1 in the "Golden Axe" stage.
Gum: Successfully complete Mission 12 in the "Jet Set Radio" stage.
MeeMee: Successfully complete Mission 8 in the "Super Monkey Ball" stage.
Pudding: Successfully complete Mission 1 in the "Space Channel 5" stage.
Reala: Successfully complete Mission 2 in the "NiGHTS" stage.
Shadow the Hedgehog: Successfully complete Mission 14 in the "Sonic The
Hedgehog" stage.

Bonus ball games:
-----------------
Successfully complete the indicated task in Planet Superstars mode to unlock
the corresponding ball game:

Puyo Pop Fever:
Successfully complete "Get A High Score!" in the "Puyo Puyo Fever" stage

Space Harrier -
Successfully complete "Get A High Score!" in the "Space Harrier" stage

Virtua Squad -
Successfully complete "Get A High Score!" in the "Virtua Squad" stage