All hidden games: Press L1, R1, R2, L2, Select,
Start at the title screen to unlock Bubble Bobble,
Cameltry, Kiki Kaikai, Metal Black, and Syvalion.
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Bubble Bobble: Play all default games at least one time.
Cameltry:
Accumulate at least one hour of game play in Lunar
Rescue, Ah Eikou no Koshien, Alpine Ski, Cleopatra
Fortune, Puchi Carat, and Flipull.
Kiki Kaikai: Accumulate a total of five hours game play
Metal Black: Accumulate at least one hour of game play in Space
Invaders Color, Space Invaders DX, Darius Gaiden,
Grid Seeker, and Majestic Twelve.
