Gigandes

A 1989 horizontal space shooter from East Technology.

In a future setting, the dimensional, suggestively demonic, creature and title character Gigandes suddenly awakens. Residing deep below the Earth's surface, it calls its own worshippers and space force from other galaxies to the Milky Way in order to conquer mankind. Earth's defenses constructs the Round-37, a small but powerful space fighter with the intent of stopping Gigandes and its evil plans, combating its forces and influences on Earth and in space.