"Neutron Star" and Ringworld. Reception Algis Budrys praised the novel as "an example of the best currently available technologically oriented sf," but faulted the lack of balance between Niven's social commentary and his storytelling. References 1968 American novels 1968 science fiction novels Known Space stories American science fiction novels Novels by Larry Niven Organ transplantation in fiction Ballantine Books books Fiction set around Procyon Fiction set around Tau Ceti