Metal Black was released in September 1991. It was a great shoot them up game, but it didn't had the success it merit since it was published at same time of Capcom's "Street Fighter II - The World Warrior
Metal Black was originally planned to be "Gun Frontier 2", but somewhere in the middle of development, the programmers decided that it had to be a different, unrelated game. Metal black's original storyline was too gloomy. Taito's supervisor rejected the original game project.
This was Taito's first game to show the title of the tune which plays for each stage at the start of each one.
Moriyama Yoshihiro (See Staff section for more info) is the chief of G.rev (makers of "Border Down" in 2003).
The game forbids the initials 'SEX' on the high score table. If you try, it gets changed it to '***'.
Metal Black was awared by the Gamest Game music section.
The companion star in the story is based on the Nemesis hypothesis as the source of Earth's most notable extinctions.
Pony Canyon / Scitron released a limited-edition soundtrack album for this game (Metal Black - PCCB-00079) on January 1, 1992.
Zuntata Records released a limited-edition soundtrack album for this game (Zuntata History L'ab-normal 1st - ZTTL-0038) on April 4, 1999.