From publisher blurb:
I’d Rather Go To Hell Than Be Here!
Travelling through hyperspace can sometimes lead to strange and terrifying results. Each time a ship uses its hyperspace engine, the crew may soon find themselves either flying through empty hyperspace to their intended destination or passing by a random chunk of another plane. Few people would be pleased to find themselves in either Hell or the Abyss, and even fewer would want to be steering through a hybrid of these two fiendscapes!
Close Encounters: Hyperspace Fiends introduces brand new rules for interacting with this treacherous subsection of hyperspace and provides stats for 13 of these demons and devils, from the lowly dretch, to the vicious bone devil, to the sword-and-rifle wielding marilith. Also included are two new ships straight from the Lower Planes: the Hellish Soulreavers and the Abyssal Dreadrazors.