Ritual Entertainment was a computer game software developer established in 1996 and based in Dallas, Texas. It was formerly known as Hipnotic Interactive, during which period they began development of their signature computer game SiN.
Members of the Ritual development team have contributed game assets to other titles such as 25 to Life and American McGee's Alice, and are also the creators of "Übertools" for id Tech 3, which has been licensed for a number of other games.
On January 24, 2007, developer MumboJumbo announced the acquisition of Ritual Entertainment. With this acquisition Ritual's focus on traditional action-oriented games was changed to casual games, essentially canceling Ritual's latest game series, SiN Episodes after releasing only one episode out of a planned nine.