Publisher's blurb:
Strange Nations is a collection of more than thirty cultures ready to be dragged and dropped into your world, with cultures appropriate for every kind of setting from high fantasy to contemporary horror to space opera. While each entry has certain setting assumptions, there are also suggestions for adapting them to other genres.
Here is the city-state of Iditt, where necromancy is an accepted cornerstone and self-mummification is the first step to repaying your lifelong debt to society. Here are the Balas, whose buildings hang off the edge of a flat world. Here are werejaguars, mad fairy refugees, and wagon-drivers with a religious injunction against touching the ground.
This book also holds a wealth of information on other subjects useful to a worldbuilder.