Abadox.

Invincibility

At the title screen press: A, A, Up, B, B, Down, A, B, Start. When you start the game press pause to become invincible.

Stage Selection

On the ”Press Start” screen, press L, U, R, D, U, R, L, D, and then one of the following:

U – Stage 2

L – Stage 3

D – Stage 4

R – Stage 5

SELECT – Stage 6

B – Stage 7

View the ending

On the title screen press: A, A, Up, B, B, Down, A, B, B, Start.