From GameBrew - a wiki dedicated to Video Game Homebrew.
hiDeS is a demo homebrew, a no bottom and no stylus game.
Think of this game as you are behind a rock and someone is firing shots, so hide behind a rock and wait till stop firing (for a few seconds).
You will hear some sound and then for a few seconds and have a break to fire some shots. If trying to fire when the sound is being played... You will lose a lot of points.
Blow at mic - Fire