Space Raiders (PlayStation 2)
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Alternate costumes
Press Start when choosing a character at the selection screen in story mode.
Bullets change to missiles
Hit an enemy 100 times in a row.
Screensaver
Remain idle at the title screen to view various FMV sequences of the game.
Space Invaders arcade game
Hold L1 + R1 and press X + Circle when "Press Start" appears at the opening screen.
Super primary weapon
Hit an enemy 50 times in a row.