It offers three different realms with at least three different kingdoms in each. Independent Gathering of Gamers - Star Trek, Star Wars, Babylon 5, and Battlestar Galatica combined into a multi universe. With background and rules. Intergalactic Transformer Roleplaying Game - A war on Cybertron and other planets in the 24th century. With rules and descriptions of character races.
Kingdoms has a graphical client and supports sending turns by email and ftp.
The Global Holocaust surprised no one. All are set in the Forgotten Realms. Lokoria - One of the newest PBEM games on the web. There're dragons, griffins, unicorn, pegasi, and dolphins, shapeshifters, halflings, and humans. Net Wars - A battle among many alliances.