Ritual Entertainment was an American video game developer established in 1996 by Robert Atkins, Mark Dochtermann, Jim Dosé, Richard 'Levelord' Gray, Michael Hadwin, Harry Miller, and Tom Mustaine.

Based in Dallas, Texas, Ritual Entertainment was formerly known as Hipnotic Interactive, during which period they began development of their signature video game SiN.

[1] In late 1997, Hipnotic changed their name to Ritual Entertainment in order to avoid a trademark conflict with another video-game developer, Hypnotix.

The purchase followed months of departures of several key employees, including chief executive officer Steve Nix, who became director of business development at id Software,[4] vice president and co-founder Tom Mustaine, who left to found Escalation Studios.

Several months after the acquisition, community relations manager Steve Hessel left the company[5] to join Splash Damage.