From the publisher:
There are few roleplaying games that lend themselves so well to solitaire or ‘solo’ roleplaying as much as Traveller. Its emphasis on tool-kit style rule systems creates a game that can be enjoyed alone for hours and hours on end. These guidelines are aimed at the referee or player who either has a copy of The Traveller Book or the three Little Black Books (numbers one to three).
The aim is to create a roadmap for solo play; rolling dice, creating and recording with a purpose. With an added table or two, this can involve running a group of characters through some daring heist or fighting with alien pirates over a lost treasure long sought, and is an incredibly enjoyable, imagination-stimulating pastime. Of course whatever is created also provides a ready-made setting with adventure hooks for a group of Traveller players at the table top.