Game Platforms

Somer Assault

TurboGrafx-16

Adjust brightness

Enable the "Sound test" code. Press Select, Up, Up, Down, Down, Left, Right, Left, Right, II, I at the sound test menu.

Mini-game

Enable the "Adjust brightness" code. Press Select until a flashing red screen appears. Then, press II, Up, Up, Down, Down, Left, Right, Left, Right, II, I. Use the D-pad to move, II to shoot, and I to fire a smart bomb during the mini-game.

Mini-game

Enable the "Adjust brightness" code. Press Select until a flashing red screen appears. Then, press II, Up, Up, Down, Down, Left, Right, Left, Right, II, I. Use the D-pad to move, II to shoot, and I to fire a smart bomb during the mini-game.

Unlimited extra lives

Pause and resume game play one hundred times. All enemies that are shot will turn into bonus lives.

Monochrome mode

Press Select fifteen times in level one during game play. Press Run to pause game play, then hold I and press Up.

Sound test

Hold Up + I and press Run at the "Input you birthday" screen to display the sound test menu. Note: The duration that Run must be pressed is very precise.

Final Boss battle

Hold Down + I and press Run at the "Input your birthday" screen.