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 Hlǘss 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.