The discworld is a giant disc carried atop four huge elephants who are, in turn carried atop the giant space turtle the Great A'tuin.
The Discworld Companion has around 344 pages.
The Art of Discworld was created in 2004.
Discworld MUD happened in 1991.
Discworld MUD was created in 1991.
Discworld Noir happened in 1999.
GURPS Discworld happened in 1998.
GURPS Discworld was created in 1998.
The Science of Discworld was created in 1999.
Sir Terry Pratchett wrote Discworld.
There is but it's a MUD (text based game). There are also several Discworld board games (such as "Thud!") and Discworld video games for PC, Playstation, etc (such as "Discworld Noir").
Discworld Noir was created on 1999-07-05.
The Discworld Mapp was created on 1995-11-09.