Amplitude
"Amplitude" is a music/rhythm game and the sequel to "Frequency," which was released in 2001. As in the previous game, players perform songs by tapping notes on multiple tracks, each of which represents an instrument in the song.
Story
In "Amplitude," you pilot a spaceship (called the "Beat Blaster") that travels along a track with varying shapes and lengths, containing up to six lanes. Each color-coded track corresponds to a different aspect of the song—such as percussion, synth, bass, or vocals—and contains a sequence of notes. When the player presses the buttons that correspond to the notes’ positions on the track, the notes activate a small section of the track. If the player successfully activates enough notes in a row, the track is “conquered,” and that section plays automatically for a certain number of measures, giving the player time to conquer another section. The goal of the game is to capture enough sections to reach the end of the song. If the player consistently misses notes, an energy meter depletes until the game is over.