Soundtrack
Psycho Soldier is noteworthy for being the first video game to utilize a vocal track during in-game play, with vocals provided by Japanese pop idol Kaori Shimizu. The Japanese and English versions of the game have different vocals for the main song.
The Japanese version of the song was released as a single in 1987 on a special cassette that was available only to those who purchased the Nintendo Famicom version of Athena in Japanese retail stores. The cassette also included a special vocal version of the ending theme.
The Japanese version of the theme song used in this game (sans vocals) became the theme song for the Psycho Soldiers team in The King of Fighters '94 and The King of Fighters '96. It also served as Athena's individual character theme in The King of Fighters '97 and The King of Fighters 2002.
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