About designing magic systems for role playing games. You can also find some discussion about magic in general Galaxy Builder Shareware, for Windows, Solaris and Linux Intel. Current version 2.1, released April 16, 2000. Galaxy Builder is a shareware program which simulates the evolution of a galaxy and its intelligent life over the course of 10 billion years. Stars form, age, and supernova, spreading metals for use in future stars.
Intelligent cultures face a number of threats, but can develop star travel and visit nearby systems.
When several starfaring cultures exist at the same time, they will interact, forming alliances or having wars. This is an incredible site. Online books covering all sorts of things from magic to herbs to technology to hygiene. Useful for writers too. Click on the map samples to create one of your own.