Atlus West, formerly known as Atlus U.S.A., Inc., is the North American publishing branch of Japanese video game company Atlus, primarily known for localizing games for both them and other third-party developers. Its first original role-playing game was Revelations: Persona on the PlayStation, described by staff as an attempt to break into the Western role-playing game market and establish the company's Megami Tensei franchise through its Persona sub-series.

Shin Megami Tensei: Digital Devil Saga is a duology of role-playing video games developed by Atlus for the PlayStation 2. They are a spin-off of the Megami Tensei series. The first Digital Devil Saga was released in Japan in 2004, North America in 2005, and Europe in 2006. Its direct sequel, Shin Megami Tensei: Digital Devil Saga 2, released in 2005 in Japan and North America, and 2007 in Europe and Australasia. The games were published in Europe and Australasia by Ghostlight and in other regions by Atlus and its North American subsidiary Atlus USA.