The Challenge XXX: Dirty 30 is the thirteenth season of a reality game show.
The 9 November 2007 episode of Numb3rs entitled "Primacy" featured alternate reality gaming, and launched the ARG Chain Factor, which centered on players using a flash-based puzzle game to unknowingly destroy the world's economy on the whim of one of the characters from the "Primacy" episode
==== A first experience in video games ====Although not considered as a pure alternate reality game, Missing Since January ("In Memoriam" in Europe) is a video game based on the same principles that appear in an ARG: an online enquiry, the game entering into the players real-life environment, willingly confusing reality and fiction (real fact-based sites, emails

