Starfall (1989)

From front cover:
In the twisted wreckage of a dying Star Destroyer, Rebel heroes battle through detention cells, stormtroopers and zero gravity to save an Alliance fleet.

Excerpts from back of book:
Features:
An action-packed script with parts for every player.
A full-color, poster-sized map of a Victory-class Star Destroyer.
Details about Victory-class Star Destroyers and how to run an adventure within their massive interiors.
A pullout section full of NPC templates and additional fully detailed maps.
An AT-ST combat scenario suitable for Star Wars miniatures sets, counters and complete set-up rules.
Lots of gamemaster notes and guidelines.

A complete adventure for Star Wars: The Roleplaying Game. For gamemaster and one or more players.