The "Culture Series" is a collection of science fiction novels written by British author Iain M. Banks. The series is set in a utopian future where a highly advanced society, known as the Culture, thrives through advanced technology and artificial intelligence. The stories explore themes of politics, ethics, and the interactions between different civilizations. Each novel in the series features different characters and plots, often focusing on the Contact division of the Culture, which engages with less advanced societies. The books are known for their imaginative world-building and philosophical depth, making them popular among science fiction enthusiasts.