Ion Storm Inc. was a Texas based developer of computer games that created the critically acclaimed Deus Ex and Anachronox.

Atari SA (Société Anonyme) is a French international holding company, and current owner of the Atari brand name. It was formerly known as Infogrames Entertainment. Its subsidiaries include Atari Interactive and Atari Inc. (not to be confused with the original Atari Inc. founded in 1972).

Domark was a British software publisher founded in the United Kingdom in the 1980s. In 1995, Domark merged with a few other companies to form Eidos Interactive, which now holds the brand as well as all the assets of Domark Software.

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