Space Invaders
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.
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 quickly press Right(3), Down, Circle, Left, Down.
Pause the game and quickly press Down, Left, Circle, Down, Right(3).
| Joker Command P1 | D00E0C8C ???? |
| Joker Command P2 | D00E0CAC ???? |
| Infinite Lives P1 | 800EF6C8 FF63 |
| Invisibility P1 | 800EF6C0 004A |
| Max Score P1 | D00EF6CC 0000 800EF6CC FFFF |
| Infinite Lives P2 | 800EF794 FF63 |
| Invisibility P2 | 800EF78C 004A |
| Max Score P2 | D00EF798 0000 800EF798 FFFF |
| Extra Life (Both Players) | 8005DB30 0001 |
| Infinite Lives (Both Players) | 8005DB3A 2400 |
| Infinite Continue Time | 8003DF36 2400 |
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