The Great Dark, or Great Dark Beyond, is the empty void between worlds (in other words, it is the Warcraft equivalent of outer space). It is described as the first of everything when there was nothing, and is part of the primary material dimension, as opposed to the Twisting Nether, which is considered part of the Great Dark.

To date, five planets have been specified in the Warcraft universe: Argus, Azeroth, K’aresh, Outland (formerly called Draenor) and Xoroth. However, countless other planets exist in the Great Dark Beyond.

The Titans probably travel through the Great Dark, as opposed to the Twisting Nether (which might explain their shock at the emergence of the Demons).