Gradius II (NES)

Gradius II
Developer: Konami Publisher: Konami Platform: NES Released in JP: December 16, 1988 This game has a hidden sound test.

A Japan-exclusive port of the arcade game. Told you it wasn't Life Force.

Sound Test

Hold A + B at the title screen and press Start for the game's sound test. Virtually identical sound tests can also be found in Super C and the Japanese version of Contra.

Oddities

Gofer, the final boss, uses a low-frequency DMC sample for his opening speech...

...but if you speed up the sample with a higher frequency you will hear this:

It's just a partial low-frequency replay of the global samples set from the game.

Here are all the samples of the game as they are stored in the ROM: