Fight for Your Freedom -- an Adventure on Tekumel

The world of Tékumel, Nu Ophiuchi d (a.k.a. Sinistra d), was first settled by humans exploring the galaxy about 60,000 years in the future, along with several other alien species. Their extensive terraforming of the inhospitable environment, including changing the planet's orbit and rotation rate to create a 365.25-day year, disrupted local ecologies and banished most of the local flora and fauna (including some intelligent species) to small reservations in the corners of their own world, resulting in a golden age of technology and prosperity for humankind and its allies. Tékumel became a resort world, where the wealthy from a thousand other stars could while away their time next to its warm seas.

Suddenly, and for reasons unknown, Tékumel and its star system (Tékumel's two moons, Gayél and Káshi, its sun, Tuléng, and four other planets, Ülétl, Riruchél, Shíchel, and Zirúna) was cast out of our reality into a "pocket dimension" (known as a béthorm in Tsolyáni), in which there were no other star systems. One hypothesis is that this isolation happened through hostile action on the part of an unknown party or group. Another is that the cosmic cataclysm was due to over-use of a faster than light drive which warped the fabric of space. No one knows, but the inhabitants of Tékumel, both human, native, and representatives of the other starfaring races, were now isolated and alone.

Severed from vital interplanetary trade routes (Tékumel is a world very poor in heavy metals) and in the midst of a massive gravitic upheaval due to the lines of gravitational force between the stars being suddenly cut, civilization was thrown into chaos. The intelligent native species, the Hlüss and the Ssú, broke free from their reservations and wars as destructive as the massive geographic changes ravaged the planet. Several other significant changes took place due to the crisis: mankind discovered it could now tap into ultraplanar energies that were seen as magical forces, the stars were gone from the sky, dimensional nexi were uncovered and pacts with "demons" (inhabitants of dimensions near in n-dimensional space to Tékumel's pocket dimension) were made and a complex pantheon of "Gods" (powerful extra-dimensional or multi-dimensional alien beings) discovered. Science began to stagnate until ultimately knowledge became grounded in traditions handed down from generations long ago, the belief that the universe was ultimately understandable slowly faded, and a Time of Darkness descended over the planet. Much of Barker's writing concerns a time approximately 50,000 years after Tékumel has entered its pocket dimension. Five vast tradition-oriented civilizations occupy a large portion of the northern continent.