From the introduction: Welcome to the world of Taste of Power! This module, The Metaphysical Revolution, is intended to be difficult for a party of 5 or 6 level 1 characters. ... The world of Yevir isn’t your standard fantasy world. Standard fantasy would start the group in or near a tavern from the employ of a mysterious stranger or a royal official or a dying creature. This town or tavern would be in or near a forest. A level 1 mission would most likely involve slaying (or avoiding) rats, bandits/raiders, skeletons, zombies, goblinoids, or/and kobolds. In my humble opinion: Yawn. Instead, the world of Yevir focuses on things not often seen in a fantasy setting. This module is called The Metaphysical Revolution for good reason. Among other things, Yevir is meant to showcase what would happen if Earth’s Industrial Revolution happened with magic and psionics instead of scientific technology. Also, the setting is intended to change due to people, y’know, doing stuff. (Player characters, especially.) New magic is researched. New item creation methods are discovered. No Medieval Stasis, here! In Yevir, 50 years is a long time because, as real-world humans, we typically don’t care about what happened more than 50 years ago. Also, things change rapidly in the setting. By the time the group is level 10, space travel isn’t out of the question. (Interplanar travel is still available, of course.) The world of Yevir is much like our own world. Morality isn’t so absolute. There is plenty of grey. As such, this world is filled with difficult decisions and people who need to make them. User summary: This campaign of scenarios is published in several documents: 232-page PDF scenario 56-page PDF players guide 3-page PDF print-and-play handouts twenty-six PNG files (illustrations, icons, and maps) one JPG file (illustration)