The Covenant (Halo Series)
Chantry of Andraste (Dragon Age Series)
Teachings of Yevon (Final Fantasy X)
Unitology (Dead Space Series)
Daedric Prince Cults (The Elder Scrolls Series)
Brotherhood of Nod (Command & Conquer Series)
Order of the Hammer (Thief Series)
Church of the Children of Atom (Fallout 3, Fallout 4)
The Order (Silent Hill Series)
Los Illuminados (Resident Evil 4)
The Founders (Bioshock: Infinite)
Esoteric Order of Dagon (The Call of Cthulhu)
The Religion of You (Black & White Series)
Religion of the Old Gods (Dragon Age Series)
The Epsilon Program (Kifflon) (Grand Theft Auto V)
Yamatai Followers (Tomb Raider 2013)
Ormagöden (Brutal Legend)
Siari Pantheism (Mass Effect Series)
Hylian Religion (The Legend of Zelda Series)
Worshippers of Spode (Spore)
Arceusism (Pokémon Diamond and Pearl)
Khalai Protoss (StarCraft Series)
Skedar Religion (Perfect Dark 2000)
Chaos Religion of Khorne (Warhammer Series)
Temple of Shadows (Fable 2; 3 is Determinant)
Brotherhood of Ultra-Science (TimeSplitters: Future Perfect)
Happy-Happyism (EarthBound)
Cult of Sirius (X-COM Interceptor & X-COM Apocalypse)
Uncle Dave’s Zealotry of the Compound (Postal 2 & Postal 3)