Space Invaders is an Action/Adventure video game for PlayStation developed and published by Unknown. It's rated Everyone by the ESRB and no users have rated it yet.
At the main menu, select either one or two players and press Circle (instead of X) to begin the game. Then a selection screen that allows any level, including planet Mercury with a new power-up and an "Alien World" featuring the best background in the game will appear.
Pause the game and press Down, Left, Circle, Down, Right(3).
Enable the "Level select" code, choose level 00, and complete it to unlock an ending, classic mode, and credits. Press Right when selecting then number of players to access classic mode. Enter the options screen to access the credits.
Pause the game and press Right(3), Down, Circle, Left, Down.
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