During the intro sequence, once you reach the part with the Springfield skyline at night and two aliens, press B, A, C, Down, Up, Right. If entered correctly, the black colors will turn to red.
Contributed By: oblivion from aoc.
Unlock Sound Test
Shoot the E in the Kwik-E-Mart sign with a rocket. If done correctly, a Krusty face will appear and you should be able to access the sound test.
Contributed By: BongoGoku.
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