Hishousame

A shooter released in 1987 by Toaplan, ported to the west as either "Sky Shark" or "Flying Shark" varying on region. The player takes control of a biplane attempting to regain control of island bases in a world war 2 inspired setting. Hishousame is notable for a it's gameplay structure and stage design, as well as it's use of bombs and enemy formations, which were incredibly influential to games such as the Raiden series, and Vertical shooters in general.