“ The PC's end up in a strange world where the very rocks are made of gold and jewels.As such gold and jewels is worth very little, but the iron in their swords and belt buckles is suddenly worth a LOT.”
“ Daedalus Station is a 550-meter long space hulk drifting in trans-Uranian space, reduced to a derelict by the catastrophic failure of its dimensional reactor. The failure of the short-lived Paradigm VI reactor created a stable dimensional bore, a three-meter wide disc in the engineering section.
What is on the other side of the rift?
Why is the rift anchored to the ship instead of a point in space?”
“ While it is within your purview to write long-spanning histories of your world, it is largely unnecessary. If you are running an RPG, do this instead: make a bullet point list of important events that affect the world today, and mysteries that people still don't know. Let these fuel your adventures.”