I am an admitted Science Fiction junkie, but as far as the Phillip Jose Farmer "Riverworld" series is concerned, likes and dislikes of a particular genre do not enter into it. I bought the first book in the series, "To Your Scattered Bodies Go" on a whim, and began it suspiciously as I do any new book or author. Before I had finished a single page, I was completely immersed in Farmer's world, and I devoured the book whole within two days. Two days later, I found myselef back at the bookstore, racing to the shelf and praying that nobody had bought the next book in the series.
Shortly thereafter, a colleague asked if I had read anything good lately, and I forced the book on him as a fanatic would force a religious text to a prospective believer... and within a week the Riverworld books were tearing through my friends, my family, my girlfriend, and suddenly everyone was buying and reading them, and a whole lot of people were constantly demanding of each other how soon they could borrow the next book in the series, and if delayed, running out and buying a copy.
I have become immersed in many many books before - series like Tolkien's Ring Cycle have drawn me deeply into them, but - and I realize that many will consider this blasphemy- I believe the Riverworld cycle to be far superior.
I will end this review by addressing the plot of the series, or at least the most basic concept: Everyone (with a few exceptions I will not explain) who has ever lived and died on planet Earth wakes up at the exact same moment, naked as the day they were born, and in the body they posessed at age 25, lying on the banks of a vast and winding river bordered on both banks by towering and unsurpassable mountains.
20th century Americans wake up next to pre-historic homo sapiens, next to 14th Century English lords, next to 8th century AD Mongol warlords... The entire spectrum of the human race - EVERYBODY - waking up alive after their deaths, regardless of their religious beliefs, together in this strange land.
Through 'Grails', huge mysterious mushroom shaped mechanical devices spaced evenly one kilometer apart down the length of the River, every human need is provided for; food, drink, cigars, liquor and even marijuana - but this planet is not Heaven, nor is it anything as obvious as what one would expect from any hackneyed twilight-zone episode scenario.
Ordinary people from all periods of human history are the main characters in these novels, as are famous historical figures like the legendary English explorer Sir Richard Burton, or even notorious villains such as King John Lackland and Herman Goering.
As a friend of mine crassly but accurately put it after reading the first book series - "If that stupid Dianetics book could become the basis for a religion, why couldn't this?" - I think I saw the same sentiments echoed in another review on this site, and I don't know about that, but if the concepts Farmer outlined in these novels were a metaphysical reality, I for one would feel better about going to church on Sundays... buy these books and believe; not in a religion, but in ridiculously good writing.