There are 108 portals that connect the Wizard’s Tower to the physical universe. Each portal can be characterized as leading either to the planet Earth or the planet Agarth. Thus the world beyond each portal can be said to be either Earthic or Agarthic.
Earth and Agartha are two distinct planets existing in two entirely different galaxies. The archetypal Earth is identical to our own planet. Agarth is a hollow world existing on the inside of a rocky, metallic shell the size of Saturn.
From a distance, each Earth appears identical to our own. The closer you look, however, the more differences you may find. Continents, species and humanity itself can differ drastically from one Earth to the next. The same is true of Agarth and its vast concave oceans.
The 108 time-lines can further be categorized according to their corresponding Prime, of which there are twelve. There are six Major Primes and six Minor Primes; each major represents a significant human history differing markedly from the others. Each minor prime represents a history in which its two nearest majors blend to create something both like and unlike either.
In between each prime door are eight Degrees. Each degree is a time-line which represents some alternate or variant of its nearest prime. Like the minor primes, each degree contains some historical elements of its corresponding major and minor time-lines.
The Major Primes
A | Alpha Prime
Alpha Prime is this world you and I inhabit. It is the truest of the Earths, which is to say it is the most like and unlike any of the others. It is impossible to physically travel between the Tower and our Earth using the portal, which was damaged or disabled at some point in the remote and ancient past.
Σ | Sigma Prime
Sigma Prime is a version of Earth which exists far in the future from our perspective. It is dominated by the peoples of Atlantis, a large continent existing in the middle of what we know as the Atlantic Ocean. In this primeval world, barbarism clashes with high science. Initiates in the esoteric arts pull the strings of both science and barbarism behind the scenes in service to unspeakable gods.
Δ | Delta Prime
The Demonic Empire of Patala dominates the ever-expanding hollow world of Agarth Delta, ruling the numerous islands that dot the planet’s northern hemisphere. These islands are home to dozens of humanoid subspecies, the results of both genetic engineering and natural evolution. The demons of Patala rule them all from their mountain fortress where the avenues are said to be paved in gold and lined with precious gems.
Ω | Omega Prime
The 69th Aeon of the Inevitable Realm of Atlass is an age ruled by general malaise. The planet has been shrinking now for hundreds of thousands of years, a process which seems to be accelerating. Each day the lands of Agarth buckle, and grow ever closer to the flaming ball of gas at its core.
Ξ | Ksi Prime
What is left of life on Agarth lives within a vast, continent-sized cavern most refer to simply as Hell. Humanity clings to the edge of extinction between the frozen outside of a dead planet and the furnace of its core. They live in a perpetual darkness interrupted only by the soft glow of the insects and fungoids that cover the continent-sized cavern.
Λ | Lambda Prime
The Mystical Realm of Anda exists on the continent of Pangea in an alternate Permian Earth. This super-continent is home to a large variety of human-animal hybrid races straight out of our own myths and legends: centaurs, ganesha, rakshasas, harpies and more populate this savage realm. But it is a world home to a dying biosphere in which the living must compete in an ever-shrinking pool of resources.
The Minor Primes
Γ | Gamma Prime
In the world of Earth Gamma, humanity has spent much of its history threatened with extinction due to the meddling of the Elder Gods. That is probably why nobody expected that nuclear war would be the final downfall of humanity. But where there is life there is hope, and there are still those who believe science will thwart what most view as humanity’s inevitable extinction.
Φ | Phi Prime
The people of Agarth Phi consider themselves the most advanced humans which have yet existed, but their hubris inevitably dooms them when they set in motion a chain of events which will destroy their planet and once again nearly bring humanity to complete extinction.
Ε | Epsilon Prime
Humanity exists in a perpetual golden age in the world of Agarth Epsilon. However, not all is at is seems. What the people who populate this paradise think is the real world is in fact a virtual one; the real world is nothing more than a simulation existing on banks of computers lining the caverns of a dead world.
Π | Pi Prime
The world of Agarth Pi seems crafted straight from an epic fantasy. It is a young world where brave adventurers travel the concave seas seeking ancient treasures from the old world which came before. Some secrets should remain buried, however.
Ψ | Psi Prime
Humanity has conquered time and space and now lays claim to a million star systems stretching across the Milky Way. Entirely new species of humanoids have arisen, creating a rainbow of strange life-forms, many of whom worship a mystical power accessed by ingesting DMT. The planet Earth was thought to be a myth until its rediscovery brought the galaxy to its knees.
Y | Upsilon Prime
The world of Earth Upsilon is much like our own, with one important exception: the fairy tale monsters and creatures of the night are all too real. As population of humanity grew and these were pushed farther and farther into a vanishing wilderness, some decided to fight back. The result was nothing less than the zombie apocalypse.