User blog comment:Damac1214/Raven Software and Neversoft Supporting Development of Call of Duty: Ghosts/@comment-1854594-20130522211407/@comment-1854594-20130523080231

Raven Software are responsible for the 2009 Wolfenstein game, Singularity, Star Trek: Elite Force, Quake IV, and I believe Return to Castle Wolfenstein. The first three I named in particular are absolutly excellent first person shooters.