A basic premise of the setting is that magical banestorms pick up people and whole villages from other worlds (including Earth) and deposit them on Yrth.

One significant difference this brings is that, unlike many fantasy settings, Yrth has many of the major Earth faiths as its core religions, including Christianity, Islam, Hinduism, Buddhism, Judaism, and others.

The Banestorm started about 1,000 years ago when a group of "Dark Elves" completed a magical ritual designed to banish all Orcs from Yrth.

For instance, in the 16th century, a number of humans were transported to Yrth from France, bringing with them dangerous knowledge of Protestantism, and gunpowder.

It was among the inspiration sources for the Media Computing Group of the RWTH Aachen University for the development of the REXplorer mobile game.