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### Amazon.com Review Larry Niven may be America's greatest living hard-SF writer. Much of his SF belongs to his famous future history, the Tales of Known Space. His preeminent creation is the Ringworld: an immense, artificial, ring-shaped planet that circles a Known Space star. Possibly SF's greatest feat of world-building, the Ringworld is featured in four novels: the Hugo and Nebula Award winner *Ringworld* (1970); *The Ringworld Engineers* (1980); *The Ringworld Throne* (1996); and *Ringworld's Children* (2004). *Ringworld's Children* returns series protagonist Louis Wu to the titular world. Louis and his friend The Hindmost, an alien of the Pierson's puppeteer race, are prisoners of the Ghoul protector Tunesmith, a Ringworld native, who is deliberately provoking the warships that surround his world. All the star-faring races of Known Space have sent warships to the Ringworld, and they are already at the brink of war. If fighting breaks out, the near-indestructible Ringworld will be destroyed: dissolved by antimatter weapons. The Ringworld series is so complex and ambitious that *Ringworld's Children* opens with a glossary and a cast of characters, inclusions that even many Known Space fans will need. Newcomers to Niven's artificial planet should start with *Ringworld*. *--Cynthia Ward* ### From Publishers Weekly *Ringworld* (1970) and its many offspring (*The Ringworld Engineers*, etc.) are an SF institution. Unfortunately, bestseller Niven's first Ringworld installment in 10 years combines the worst qualities of hard SF (i.e., cardboard characters, a plot propelled primarily by technological infodumps) with the least appealing characteristics of sequelitis (i.e., a story no one can follow without fanatic dedication to earlier books). In the year 2893, 67 Ringworld days after Louis Wu, badly wounded in battle with "the Vampire protector, Bram," stepped into a healing autodoc, our hero awakens with a restored, younger body. The passive Louis and several alien companions soon get caught up in a war involving weaponery that could destroy Ringworld. The novel finally comes into its own about midway through, while a glossary and a cast of characters will help orient those new to the series. Copyright © Reed Business Information, a division of Reed Elsevier Inc. All rights reserved.