Everything that Smallworld did, Littlestar does on a grander scale. This includes the wonderfully absurd satirical humor, surprising characters, and crazy scifi stunts. On the other hand, the plot is harder to follow, characters are harder to track, and I get the constant nagging feeling that the whole thing is going by too fast. Historical, religious and cultural allusions are everywhere; enough irreverence to offend all readers but with an even-handed treatment that makes it easy to forgive.
Overall though, a delightful read that I'm recommending to everyone who will listen.