Arcade Gears Vol. 2: Gun Frontier

Gun Frontier is the prequel to Metal Black, another largely unknown shooter, this time a Darius-like horizontal blaster, which was also released on Saturn by another company called Ving - nothing to do with the publishers of this game though.

Gun Frontier was ported to the Sega Saturn in 1997 (as volume 2 of the Arcade Gears series)