I just reread this and I'm glad I did. This is one of those little books full of big ideas, wonderful language and some interesting characters. They're proud, fearful, smart (and stupid) and all around human, even though they are gods ...
For those that don't know, the book is set on a distant world in the far future when Earth is dead and the world was colonized by a starship called The Star of India. There, the crew helped tame the world by fighting against the bodiless Rakashas, the Mothers of the Glow and several other races. Then they set themselves up as Hindu gods using psionics and advanced technology.
As the book opens Tak, an ape, and Yama, a renegade god of death are trying to reincarnate the Buddha, who has been exiled to Nirvana. From there we are taken on a tour of Heaven (the city of the gods), treated to epic battles suitable for the Vedas and all around given a good story.
I'll say this much - I've read Zelazny's Amber series once. This I've read and re-read and will continue to do so.
Zelazny provides an alternate world where colonists use the power of their technology to impersonate gods (in this case, Hindu gods) while a rebel impersonates Buddha to try to bring them down. Not the most original of plots (this was written in 1967, and reads that way - burn some incense while you read), but a solid contribution by a solid writer.