Canon:Ptolus

''What is Ptolus? Imagine a cosmopolitan fantasy city where humans, elves, and dwarves rub elbows with orcs, ratmen, and stranger creatures. A city built upon the ruins of two previous settlements, creating a mazelike undercity full of dangerous (but lucrative) chambers just waiting to be discovered. A frontier port ruled by a power-mad theocracy amid the decay of a collapsing Empire.

''A place where crime families war openly and noble houses battle discreetly—with equally deadly results. A city where magic is familiar, adventurers are welcome, and thousands of residents dwell beneath the shadow of a Spire crowned with a citadel of evil so strong that the very earth thrust it away from itself untold ages ago.

Welcome to Ptolus.

Campaign Setting
Ptolus is a campaign setting created by Monte Cook. The word is the name of the city which is central to the campaign setting.

Unlike typical campaign settings, Ptolus focuses on the city of Ptolus instead of an entire land. While some details about outlying areas and politics are included, the bulk of the book is dedicated to the streets, people and intrigue of Ptolus itself.

Ptolus was used as the earmark to the creation of D&D's 3rd Edition. It was the QA test bed for rules, the supplication of NPCs and the creation of tales that would help shape 3rd edition in to what it is.

Comparison to D&D Core Rules
Ptolus attempts to utilize the core rules as they are written with little changes, as noted by the lack of house rules or exceptions to the rules.

The most notable differences are:
 * Changes to the core races
 * Elves include a Cherubim style that has wings and can fly
 * Centaurs are an included player race
 * Dark elves are also included, but capable of functioning normally in bright light
 * Addition of campaign-specific prestige classes
 * Use of technology
 * Guns
 * Techno-gadgets

While Ptolus includes guns and technology in the campaign setting, it also takes the stance that technology is a left over from years past and thus, more mysterious than a fact of life.