For a long time, Abaddon was believed to be lifeless and cold, covered with rusty sands, and criss-crossed with strange "canals". There are many areas on the surface with active volcanos, bubbling hot springs, and vents that let noxious vapors seep into the atmosphere.

The truth is that Abaddon is indeed capable of sustaining life, though not as well as Sinai by any means. At least in one area of Abaddon, there are several scattered colonies of races that parallel many prominent on Sinai, living in artificial "Life Domes", and with a higher level of technology that allows them the use of machines that would not be considered possible -- or safe -- on Sinai. The canals do indeed hold water and vegetation, but also are infested by disease and hostile creatures (such as the "Rotbiter") that make them far too dangerous to utilize by most.

In recent history (during the first year of the reign of Tahir Archelaus the First), a (relatively) small chunk of the Himar region (including the city of Elamoore) was transplanted by some sort of Exile technology onto Abaddon, resulting in the fertile "Pit of Himar" that may some day be the site of the largest Life Dome of all. Already, the combined efforts of several tribes on Abaddon have resulted in the Pit of Himar being spanned by a massive framework, slowly being covered against the inhospitable elements, and fitted with environmental controls.

Abaddon is very rich in metals, and Abaddonian iron is a popular commodity on metal-scarce Sinai. Abaddonian metal that has recently been brought to Sinai is known to have magic-resistant properties, though it has been observed that this slowly degrades as the metal "acclimates" to Sinai. This phenomenon does not seem to apply to all metal brought in from other worlds, though it is still very common - It is well known that meteoric iron has certain anti-magic properties, after all.

Access to the world of Abaddon is provided by an ancient Sifran structure known as the Gateway Tower. The Gateway Tower on Abaddon is within the domain of the human-dominated Kampfzengruppe, allied with the Khattan Emirate for its control.

"Abaddon" is also the name of the God of War, Fire and Destruction in the Olympian mythos.