Gradius III and IV is a shooter game developed by Konami and released on PlayStation 2.
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Cheats
Instant double shot powerup
Pause the game play after passing the first Boss and press Up2 Down2 Left Right Left Right Square Triangle A sound will confirm correct code entry Note This may only be up to 25 times equal to the number of levels that have been successfully completed Note To this powerup for player two press Up2 Down2 Left Right Left Right Square Triangle Select Start
Instant laser shot powerup
Pause game play after passing the first Boss and press Up2 Down2 Left Right Left Right X Circle A sound will confirm correct code entry Note This may only be done up to 25 times equal to the number of levels that have been successfully completed Note To use this powerup for player two press Up2 Down2 Left Right Left Right X Circle Select Start
Extra Edit mode
Successfully complete or accumulate ten hours of game play in Gradius 3 to unlock an Extra Edit option This option allows weapon combinations to be edited More weapons can be unlocked for editing by completing the game a second time or by accumulating another ten hours of game play
Cube Attack mode
Reach level 9 in Gradius 3 to unlock Cube Attack
Original Gradius levels
Intentionally allow a Boss in level 10 in Gradius 3 to hit you to unlock levels from the original Gradius The original levels will also be unlocked in extra mode
Boss Rush mode
Successfully complete Gradius 4 to unlock Boss Rush mode
Stage select
Successfully complete Gradius 4 without using any continues to unlock the Stage Select option for that game
