Ritual Entertainment is a computer game software developer established in 1996 and based in Dallas, Texas. It was formerly known as Hipnotic Interactive. The developer has recently released the first of their 7 SiN Episodes. Episode One was called Emergence. They are also currently at work on an unannounced project.

Members of the Ritual development team have contributed game assets to other titles such as 25 to Life and Alice, and are also the creators of "Ubertools" for the Quake 3 engine, which has been licensed for a number of other games.

Games developed by Ritual Entertainment

• Scourge of Armagon (1. expansion pack) — (1997) (PC) developed as Hipnotic Interactive
• Sin — (1998) (PC (Windows and Linux), Linux on PowerPC) both Linux versions ported by Hyperion Entertainment
• Wages of Sin (expansion) — (1999) (PC) developed by 2015
• F.A.K.K.² — (2000) (PC (Windows and Linux), Mac (Mac OS and Mac OS X), Dreamcast) Linux version ported by Loki Software, Mac OS Classic version ported by Contraband Entertainment, Mac OS X version ported by The Omni Group
• Blair Witch Volume 3: The Elly Kedward Tale — (2000) (PC)
• Sin Gold (port) — (2000) (Mac) ported by Contraband Entertainment
• Condition Zero — (PC) Ritual Entertainment was working on the title in 2002 after Gearbox Software and before Turtle Rock Studios took over in mid-2003
• Elite Force II — (2003) (PC)
• Counter-Strike (port) — (2003) (Xbox)
• Black Hawk Down: Team Sabre (expansion) — (2004) (PC)
• SiN Episodes: Emergence — (2006) (PC)