Consider Phlebas

"Dazzlingly original." -- Daily Mail "Gripping, touching and funny." -- TLS The war raged across the galaxy. Billions had died, billions more were doomed. Moons, planets, the very stars themselves, faced destruction, cold-blooded, brutal, and worse, random. The Idirans fought for their Faith; the Culture for its moral right to exist. Principles were at stake. There could be no surrender. Within the cosmic conflict, an individual crusade. Deep within a fabled labyrinth on a barren world, a Planet of the Dead proscribed to mortals, lay a fugitive Mind. Both the Culture and the Idirans sought it. It was the fate of Horza, the Changer, and his motley crew of unpredictable mercenaries, human and machine, actually to find it, and with it their own destruction.

Iain Banks came to widespread and controversial public notice with the publication of his first novel, The Wasp Factory, in 1984. Consider Phlebas, his first science fiction novel, was published under the name Iain M. Banks in 1987 and began his celebrated ten-book Culture series. He is acclaimed as one of the most powerful, innovative and exciting writers of his generation.