Turrican
Turrican is a video game from 1990, programmed and designed by Manfred Trenz. It was first developed for the Commodore 64 by Rainbow Arts, but was later ported to other systems. In addition to concept design and character creation, Trenz personally programmed Turrican on the Commodore 64, and a sequel, Turrican II, followed in 1991 for the Commodore 64 and other platforms.
Story
The lost colony of Alterra is a completely man-made living world abandoned long ago in a nearby galaxy. Alterra is actually five colonies in one. Each self-contained habitat was separately bioengineered by a powerful ecosystem generation network called the Multiple Organism Unit Link. MORGUL for short. The first colonists used MORGUL to make Alterra habitable. But a catastrophic quake disrupted all functions of the system interface, and MORGUL rebelled murderously. The few colonists lucky enough to escape told the grim tale of a higher intelligence gone mad. For generations, humanity sought a return to Alterra. Finally, genetic research created a savior: Turrican, a mutant warrior bred for the task of reclaiming the planet. Meanwhile, MORGUL has been abusing Alterra's life forms for its brutal, destructive purposes. Thus, Turrican's task is to eliminate the hostile organisms on Alterra's five multilevel worlds and ultimately destroy the three faces of MORGUL.