Books Ringworld by Larry Niven Paperback, 342 pages, Random House, List Price: $5.99 | purchase close overlay Buy Featured Book TitleRingworldAuthorLarry Niven Your purchase helps support NPR programming. How? Amazon Independent Booksellers Book Summary Niven's hugely influential 1970 novel of an outer space expedition to a mysterious object – a vast artificial world in the shape of a ring – that goes horribly wrong. Genres: Science Fiction & Fantasy Fiction Also by Larry Niven Lucifer's Hammer Flatlander/The Collected Tales of Gil "The Arm" Hamilton The Mote in God's Eye Facebook Twitter Google+ Email NPR stories about Ringworld Summer Books 2011 Your Picks: Top 100 Science-Fiction, Fantasy Books August 11, 2011 More than 5,000 of you nominated. More than 60,000 of you voted. And now the results are in. Explore the winners of NPR's Top 100 Science-Fiction and Fantasy survey — an intriguing mix of classic and contemporary titles.