Check it out. This is Terminus:
It is a giant space station built by an unknown alien race; seemingly derelict, it sits at the centre of the universe.
The Doctor and his companions wind up for unimportant (for our purposes) reasons on a spaceship which is travelling to Terminus. The ship is occupied only by a robot crew and has a bunch of sealed compartments. Meanwhile, some space pirates also land on the ship. They look like this:
As the ship nears Terminus, the compartments open revealing that they are full of people who suffer from "Lazar's Disease," which is basically leprosy but a sort of future plague. They are a bit medieval. It transpires that Terminus is basically a sort of leper hospital and/or place that lazars go to die, owned and operated by a shadowy company called Terminus, Inc. Running the place for the company are these guys, the Vanir:
... or Space Skeleton Goth Viking Slave Knights, as I like to think of them. They are hooked on a drug called Hydromel, which the company controls the supply of; it is a glowing green liquid that comes in vials they plug right in to the front of their armour. They have high-tech staffs, or possibly staves. Oh, and they all hate each other and are vying to be Top Vanir, presumably because that guy gets first pick of the drugs.
Their armour protects them from the radiation that floods the station, except in the Forbidden Zone, where they dare not go. Only the Garm walks there:
The Garm looks like a big scary monster (well, a big stupid fat space dog, actually, because 1983 Doctor Who budget) but is actually a pretty chill dude who is trying to use the radiation to cure the lazars. He is also wicked strong.
Despite the Forbidding, one of the Vanir, a particularly brainy specimen named Bor, has gone off into the Forbidden Zone to figure out what's up with some anomalous readings he's getting on his staff thingy. He is missing and the others are arguing about what to do about it.
Bor has discovered that there is a big-ass radiation leak (which is what creates the Forbidden Zone) and is trying to fix it. Also (relatedly?) there's the abandoned Terminus control room, which is inhabited by a dead alien in a space suit, who was killed when Terminus, I shit you not, travelled back in time, experienced an engine malfunction that caused the Big Bang and was rocketed forward to now. The remaining engine is also malfunctioning and could blow at any moment. You can deactivate the engine, but the deactivation lever is stuck.
|I think that means this guy is actually God, doesn't it?|
Unsuccessful shows are often actually the best for game-ifying, since good games and good stories don't necessarily require the same things.