My game is more like life. People (PCs) enter and then go off on their own or meet other PCs and do their own things.
I have some story arcs that your PC might become involved in or not.
One of the posters here has a PC with two personalities, another is a Markeb female who has a small shop in the Zocolo and is just returning from a boring job working for a human expedition, a female Narn doctor who works for Dr. Franklin, a male human pilot in charge of B5's fighters, A PSI Corps commercial teep, two male Minbari one works as a courier pilot for Delin and the other is castless who works for a private security firm on B5.
There are others who set up their PC along with detailed background which I have used in the ROLE playing but I dropped out for various reasons. Some of those PCs are being played by me as NPCs but are available to the original players should they return.
Each player has been given a lot of freedom although I have had to reign some of them in from time to time. "No, you can't destroy the entire Shadow fleet with your Starfury. Besides you haven't seen or heard of the Shadows, yet."
The Yahoo Group is b5_rpg.