Assassin's Creed is a historical action-adventure video game series and media franchise published by Ubisoft and developed mainly by its studio Ubisoft Montreal using the game engine Anvil and its more advanced derivatives. Created by Patrice Désilets, Jade Raymond, and Corey May, the Assassin's Creed video game series depicts a fictional millennia-old struggle between the Order of Assassins, who fight for peace and free will, and the Knights Templar, who desire peace through order and control. The series features historical fiction, science fiction, and fictional characters intertwined with real-world historical events and historical figures. In most games, players control a historical Assassin while also playing as an Assassin Initiate or someone caught in the Assassin–Templar conflict in the present-day framing story. Considered a spiritual successor to the Prince of Persia series, Assassin's Creed took inspiration from the novel Alamut by the Slovenian writer Vladimir Bartol, based on the historical Hashashin sect of the medieval Middle East.

Corey May is an American video game writer. He is currently the Narrative Director for Austin video game developer Certain Affinity. May is also the co-founder and President of Sekretagent Productions, a production company based in Los Angeles, California working in the film, video game, and internet industries. May is the main writer of the Assassin's Creed series. May worked as the lead writer on Assassin's Creed, Assassin's Creed II, and Assassin's Creed III. Corey May also helped Jeffrey Yohalem as a writer on Assassin's Creed: Brotherhood, and Darby McDevitt on Assassin's Creed: Revelations. May helped Jeffrey Yohalem once again on Assassin's Creed Syndicate, making it the last game he worked on before departing from Ubisoft. May also helps in the production of most other entries into the Assassin's Creed franchise to make sure everything flows together into one coherent narrative.