Legends tell of a race of super beings, the Slordax, who once tried to conquer
the galaxy. The war lasted for a century. In the end, the Slordax were
repelled. The Slordian system was dead for over seven hundred years. But now
the Slordax are back. The Intergalactic Defense Alliance gave you the task to
take them out with your RedDog Adaptive Strike Ship before they grow too
strong to defeat.

Slordax is a rather typical shoot-’em-up vertical scroller with EGA graphics
and five levels. An unique feature is the ability to control how fast the
screen scrolls.

Slordax: The Unknown Enemy