Greg Stafford was one of the towering giants of the roleplaying game community: founder of Chaosium, writer of Glorantha, Pendragon, Ghostbusters, the Prince Valiant game… nobody ever called him a Great Old One because it would have been far too cute-ironic, but it fit. He was one of those people who defined RPGs from the start, and 70 is far too young for him to pass from us. My condolences and prayers for him and his loved ones.