User blog comment:KATANAGOD/Hidden Morse Code on Callofduty.com/@comment-3123696-20120423222948/@comment-1055346-20120424010100

I like them, and I haven't seen many. BO and Portal 2 are the most recent games I can recall that had notable ARG's. The only other two I can think of off the top of my head are Halo 2 (An award winning and heavily celebrated ARG) and Halo 3.