Rush City was packaged with a magazine that is a subsidiary of which media, events, and research technology group?
Rush City (comics):  DC Comics produced a special Zero issue web-comic that is available on the DC Comics website, and was packaged with the August 2006 issue of the GamePro magazine. GamePro:  The company was also a part subsidiary of the privately held International Data Group (IDG), a media, events and research technology group.
International Data Group