Galmedes

Galmedes is a vertical scrolling shooter arcade game released only in Japan by Visco Corporation. The ship had two types of attack: the standard firing weapon and a charge attack. Once the player collected all three of the collectible weapons, the player could select either of those weapons during combat.

Story
On the alien planet of Gaston, a dictator named Gildy rose to absolute planetary power. Gildy started a plan to take over his home solar system, but upon doing so decided to spread his influence. The next galaxy he planned on invading was Galmedes. In response, the unified forces of the Galmedians created a powerful space fighter called the LEPTON (Launched Electro-Projectile Thermal Osmotic Nullifier). Two pilots, Foo and Bar, are selected to launch the LEPTON fighters against the invading Gastonian Forces.