Research Station Gamma is an adventure in which the player characters are stuck on the water world Vanejen. They are approached by an indigenous alien, who asks them to rescue his family from some sort of strange prison, giving the adventurers an opportunity to break into a top-secret Imperial Research Station.
Extra material includes rules on Tech 5 submersibles (roughly analogous to World War 2 submarines), information on the planet Vanejen and its major lifeforms, information and maps about Research Station Gamma, and rumours the adventurers hear during the adventure.
This is a used copy with minor cover scuffing.