Usability Views Article Details  home | timeline | recent | popular | e-reports | userati | about this site The Cabal: Valve’s Design Process For Creating Half-Life (10 Dec 1999) Article URL: http://www.gamasutra.com/features/19991210/birdwell_01.htm Read 297 more articles from Game Development Network sorted by date, popularity, or title. Next Article: Homework Questions This site is a labour of love built by Chris McEvoy