The Ringworld Engineers is a 1979 science fiction novel by Larry Niven. It is the first sequel to Niven's award-winning Ringworld and was nominated for both the Hugo and Locus Awards in 1981.
Building Harlequin's Moon is a science fiction novel by Larry Niven and Brenda Cooper. The novel is set in the distant future as a group of space travellers, marooned in an inhospitable solar system, attempt to terraform a moon and create a sufficient civilisation on it to refuel their ship so they can continue to …
A World Out of Time is a science fiction novel by Larry Niven and published in 1976. It is set outside the Known Space universe of many of Niven's stories, but is otherwise fairly representative of his 1970s hard science fiction novels. The main part of the novel was originally serialized in Galaxy magazine as …