Gradius Collection Codes -
Cheat mode:
Pause in any game under their easier difficulty setting, then press
(x2),
(x2),
,
,
,
,
,
.
All weapons and power-ups will be unlocked.
Gradius Gaiden: Power-up:
Pause game play, then press
(x2),
(x2),
,
,
,
,
,
.
Free Play mode
Have a saved game file with over ten hours of accumulated game play.
Level select
Successfully complete the game without using any continues.
Gradius 3: Cube Attack
Survive until level 9.
Gradius 3: Extra Mode
Survive until level 9.
Gradius 3: Extra Edit
Successfully complete the game. Select Extra Mode to access more weapons.
Gradius 3: Gradius level
Intentionally get shot by the mouth attack of the final Boss.
Gradius 3: Salamander level
Intentionally get shot by the mouth attack of the final Boss.
Gradius 3: Stage Select
Successfully complete the game.
Gradius 4: Boss Rush mode
Successfully complete the game.
Gradius 4: Stage select
Successfully complete the game.
Gradius Gaiden: Stage select
Successfully complete the game under the normal or higher difficulty setting.