 While Stafford himself has been described as "one of the most decorated game designers of all time" and "the grand shaman of gaming", many other notable game designers have written material for Chaosium.These include David Conyers, Matthew Costello, Larry DiTillio, David A. Hargrave, Rob Heinsoo, Keith Herber, Jennell Jaquays, Katharine Kerr, Reiner Knizia, Charlie Krank, Robin Laws, Penelope Love, Mark Morrison, Steve Perrin, Sandy Petersen, Ken Rolston, Ken St. Andre, Jonathan Tweet, and Lynn Willis, among others.Greg Stafford founded "The Chaosium" in 1975 to publish his board game "White Bear and Red Moon".