An Alternate Reality Game tied to Dollhouse has begun, teased by posts on Whedonesque, leaked to news sites, and populated by unfolding new clues.  Sites tied to Rossum Corporation and other entities in Dollhouse have been unveiled. 

ARGs have been used both to promote a particular property, such as the ARGs tied to Lost or Halo 2; or as ends in themselves, as products (see “Perplex City:  An Alternate Reality CCG” or “Wiesman Book in Controversy”).