Larry Niven's sequence of Ringworld novels is one of the classic works of science fiction. Winner of both the Hugo and Nebula Awards, it is a towering imaginative achievement - as extraordinary as the world on which it is set.

The Ringworld is dying. And this time even Louis Wu, captive of the hyper-intelligent alien Tunesmith, may be unable to save it. Even if Louis can escape he will then have to survive in a galaxy ravaged by interstellar war and deadly political intrigue. For the Ringworld is no longer a secret and entire civilisations now battle to control its power.

The victorious race that conquers the Ringworld will conquer the galaxy...and no one will be able to stop them

But Louis Wu is going to try.