Farmer's second World of Tiers novel, The gates of Creation, is a bit of a disappointment. Its brevity and, admittedly, its innovative ideas for a number of artificial universes / planets that do not adhere to the common understanding of what planets are or should be speak in its favor. The novel's characters are, however, underdeveloped, without personality and easily exchangeable. Without the first World of Tiers novel this novel's protagonist would remain a total enigma.
This is quite a pity. There are a some good ideas that could be hammered out in more detail. However, whenever there is an opportunity for adventure and character development Farmer skips ahead advancing the rather weak plot. The few twist and turns do not help to make this whole sad and sorry little book more interesting. Instead, they feel like a last effort in showing some story telling skills. Famer's Riverworld series is definitely his better work.