Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Fourth Protocol is an interactive fiction computer game based on Frederick Forsyth's 1984 spy novel The Fourth Protocol. The detective-style gameplay resembles contemporary menu-driven adventures such as The Vera Cruz Affair, and later titles such as Yes, Prime Minister and Floor 13. The game was released in 1985 by Hutchinson Computer Publishing, a subsidiary of the publishing house Hutchinson. It was designed by John Lambshead and Gordon Paterson, and the programming was credited to the Electronic Pencil Company Ltd.

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