Gradius Arcade Soundtrack was created on 2002-04-24.
Gradius III - soundtrack - was created in 1989.
Gradius II was created on 1988-03-24.
Gradius III was created on 1989-12-11.
Gradius Gaiden was created on 1997-08-28.
Gradius Galaxies was created on 2001-11-09.
Gradius ReBirth was created on 2008-09-02.
Gradius V was created on 2004-07-22.
Gradius - video game - was created on 1985-05-29.
Gradius II happened in 1988.
Gradius III happened in 1989.
Gradius Gaiden happened in 1997.
Gradius Galaxies happened in 2001.