With Glorian prodding him ever onward, Mirakles descends into the Great Underground Empire where he encounters Spike the Protector, the Dragon's Lair, the Wizard's Workroom, the winged vampire were-unicorn, and the Warm Boot of Frobozz.
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Used availability for George Alec Effinger's The Zork Chronicles
June 1990 : USA Paperback
Title: The Zork Chronicles (Infocom)
Author(s): George Effinger
ISBN: 0-380-75388-X / 978-0-380-75388-8 (USA edition)
Publisher: Avon Books (Mm)