What Are These Worlds?

An explanation (hopefully) of what some of these games are based on

Sadly, although I would like to claim to be allknowing, I am not, and for some of these worlds the best I can do is provide a link to the books, or programs that can do that job better. If you feel you can summarize a world that has no explanation, then please do! Send your summary to suggestions@rpgplug.co.uk and I'll put it up, and put your name to it. The same applies if you know of a subject that hasn't even gained a link here, but you think deserves one. As I said, I'm not allknowing, so do please help me out.