Labyrinth Lord takes us back to the basics of old-school fantasy gaming by combining text and terms provided by Open Game Content (OGC) released under the OGL, and game system algorithms from simple fantasy game systems of the late 70s and early 80s. This combination of terms, text, and new algorithm expression forms the basis of Labyrinth Lord as a reference document for players and third-party publishers, who will be able produce material for Labyrinth Lord with a free license. The license and its terms will be released concurrently with the core rule book. One important feature of this arrangement is that the majority of Labyrinth Lord will be Open Game Content. In addition, there will be very few restrictions in the Labyrinth Lord license, meaning that fans and publishers alike will be able to create virtually any material and refer to the Labyrinth Lord trademark. By taking this route, publishers and fans can establish this brand name as something that is collectively understood to be completely compatible with similar simple fantasy systems from the 70s and 80s.