Asheron's Call (AC) is a fantasy MMORPG for Microsoft Windows-based PCs, released on November 2, 1999. The land of Dereth and its surrounding islands, in which the game is based, is a large, seamless 3D world that is occupied by hundreds of players.
AC was developed by Turbine Entertainment Software and published by Microsoft. The first expansion, Dark Majesty, was released in 2001. A second expansion, Throne of Destiny, which includes a graphics upgrade, new player race and new landmass was released on July 18, 2005. In addition to the expansion packs, the in-game story is advanced by monthly updates, which introduce new quests and gameplay dynamics as part of the subscription package.
While neither Turbine nor Microsoft have been forthcoming in releasing exact subscription counts, it is believed that Asheron's Call peaked in popularity in early 2002 at about 120,000 accounts and has since dropped to below 10,000.
In December 2003, Turbine purchased the rights to the Asheron's Call franchise from Microsoft and assumed full responsibility for content development, customer service, billing and marketing in 2004.