High Moon Studios

High Moon Studios (formerly Sammy Studios) is an American video game developer, that used to be a part of Sierra Entertainment. After a period as independent studio, the developer was acquired by Vivendi Games in January 2006 and retained the current name. It is now owned by Activision Blizzard, a parent company of Activision.

They are currently developing the Playstation 3 and Xbox 360 versions of ''Call of Duty: Advanced Warfare. ''The other versions are being made by Sledgehammer Games.