Horus as bright as the sun was explained by a tale, known as "The Contendings of Horus and Seth". In this tale, it was said that Set, the patron of Upper Egypt, and Horus, the patron of Lower Egypt, had battled for Egypt brutally, with neither side victorious, until eventually the gods sided with Horus. As Horus was the ultimate victor he became known as "ḥr.w wr" "Horus the Great", but more usually translated "Horus the Elder". In the struggle, Set had lost a testicle, and Horus's eye was gouged out. Horus represented the eclipsing binary Algol in the Calendar of
Horus Heresy (fictional event) significant development was initial release of the "Horus Heresy" miniatures wargame expansion. This in effect repositioned the concept as a foreground element within the main "Warhammer 40,000" gaming system, thereby extending the related universe's active setting to the Horus Heresy era. In February 2013 the first Heresy-specific event, the 2-day Horus Heresy Weekender, was announced. In addition to regular edition products, releases include special editions such as anniversary editions, collector's editions, web exclusives, and bundle offers. However some components, including the majority of pre-"Horus Heresy" book series products or works, may be out of print, discontinued, or obsolete, and generally