Input the following on the listed screens:
Effect Code 8th Difficulty On the Option Screen: Up, Up, Down, Down, Left, Right, Left, Right, B, A. Controllable Octopus (move with D-Pad, scale with A or Y) On the Demo Screen: Hold Up+L and press X, X, X, X, X, B, B, B, B, B, Y, Y, Y, Y, Y, A, A, A, A, A Invincible On the Pause Screen While Playing: L, R, Up, X, Right, A, Left, Y, Down, B, A, Y, A, Y, R Round Select On the Option Screen: Up, Right, Down, Left, X, A, B, Y. Three Super Bombs (once per stage) On the Pause Screen While Playing: X, X, X, B, B, B, Y, Y, Y, A, A, A, L, R
Highlight Octopus on the character selection screen, and hold Up+L+X for around 30 seconds. A menu will then be displayed allowing you to select your starting stage, scene, and ''Mutek'' (set it to 01 for a fully powered up, invincible ship)
Contributed By: PentarouZero.
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