Galactic Storm was released in March 1992 in Japan, even if the titlescreen says 1991 (development year). It had good graphics and sound for its time. But Street Fighter 2 was released the same year and crushed everything. So, the game was a flop.
Some graphics (player design, final stage, and some others) were taken from "Master of Weapon
Pony Canyon / Scitron released a very rare soundtrack album for this game (nouvelle vague - G.S.M TATIO 7 -).
Zuntata Record released a limited-edition soundtrack album for this game (Galactic storm ~ Memory of eyes) on 02/02/1999.
Zuntata Record released a limited-edition soundtrack album for this game (Retro game collection - shooting cluster 1) on 29/06/2011.