the final game has 19 music tracks, but this version only has the first seven (the order of music in the sound test is unchanged). because of this, there are differences in what music is used for what round, but even when the music is in all versions, different tracks are used. the music used in 1-1 is china beat, and 1-2's music is "make me dance" while, in the final version, both stages use the shinobi. the game over screen has no music and is missing the masked ninja's laughter. the drum samples used throughout the game are also different.