The first Day of Fury occurred approximately 11,900 years ago, several decades after the Xorda race attacked the planet via the Gene Bombs. The bombs, which were supposed to preserve the planet's environment as it was at the time of their use, instead triggered massive volcanic reactions on a global scale, which hurled billions of tons of dirt and ash into the planet's atmosphere, preventing most sunlight from reaching the planet. After thousands of years, the sun finally burned through the ash and dirt in the atmosphere, allowing for the emergence of the Mobosaurs. (StH: #148, TMS: #3)