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| All Weapons | 100% | |
| Pause gameplay and press Up, Up, Down, Down, L, R, L, R, B, A. | ||
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| Self-destruct | 100% | |
| Press Start to pause game play, then press Up(2), Down(2), Left, Right, Left, Right, B, A, Start. | ||
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| Challenge A mode | 100% | |
| Win the game to unlock the ''Challenge A'' option at the main menu. | ||
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| Delete saved game | 100% | |
| Enter the options screen, highlight "Exit", then hold L + R + B and press Start. | ||
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| Challenge B mode | 100% | |
| Win the game in Challenge A mode. | ||
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| All power-ups | 100% | |
| Press Start to pause game play, then press Up(2), Down(2), L, R, L, R, B, A, Start. *** This can only be done a limited number of times until it causes your ship to self-destruct. Alternately press Start to pause game play then press Down(2), Up(2), Right, Left, Right, Left, A, B, Start. This code can be done as many times as needed, but costs one life. Additionally, it does not provide the Speed power-up. | ||
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The classic Konami franchise Gradius takes off on the Game Boy® Advance. An evil force has taken over a distant star system and only you can stop them. Soar through a myriad of enemy attack units and blow them to bits using ultra powerful weapons including photon missiles and laser beams. Gradius Galaxies perfectly blends classic game play of the past with the newest in portable gaming technology. 
