Voyage into the Unknown
The inlay blurb states you are one of the survivors of Earth's Great War and, on hearing new that forces of the Death Star are about to make a final move against Earth, you decide to take control a space ship you just happen to find, intent on setting off and finding some all powerful Crystal, negotiating a Maze of Total Blackness, locating the Death Star, and presumably destroying it.
Unfortunately, the blurb also states the "your knowledge of space ships is minimal", and this is reflected in game. No instructions are present anywhere, and even getting off the first screen requires pressing random buttons to start the ship ("E"ngine, "P"ower, "I"gnition, if you're interested). Things don't improve once you have launched and at most screen you have to guess what key might do something, or what the 'futuristic jargon' shown on screen ("Time Warp Chuck Out", or encountering a "Buke") might mean.