I don't know what Star Maker is, but it's sure not a novel. An Englishman lying on a hillside is mentally carried into deep space, where after frolicking with the stars, he enters into telepathic communion with a member of a race of Other Men, intelligent aliens with a society based on taste as our is based on sight. From this initial point, Stapledon explores a diverse galaxy of intelligent aliens evolved on different lines, using the expanding collective consciousness as lens. Each society is beset by a kind of industrial crisis, taking different forms, but generally a conflict between anarchic individualism, tribal primitivism, and oppressive totalitarianism. Species which transcend their crisis enter into a utopian society, and telepathic community with the galactic whole, which defeats war itself, has a brief conflict between planetary species and the living star, and then settles into perfecting its collective mentality in an attempt to reach the supreme being, which the collective intelligence deems the Star Maker. Eventually, this immensely wise intelligence finds its creator, which is immensely greater, and has created many universes operating on many laws of good and evil.

It's a fantastic cosmological voyage and speculation, but almost entirely devoid of plot or character. And in the end, it's shockingly conventional. The Star Maker is... basically the Christian Gods. Capitalist societies reach a historical crisis, which either kills them or transforms them into Marx's utopian communism. A lot of ideas which have become stock in scifi seem to have appeared here first, and it's an ambitious book, but one which I can't honestly recommend.