GreyFuss tour question has a yes and no answer. Cryo Interactive Entertainment developed and published the first Atlantis games in the series:
Atlantis the Lost Tales and all the Beyond Atlantis games. Cryo Interactive Entertainment went out of business after the last Beyond Atlantis game was released.
In 2003 several members of the Cryo team got together and formed Atlantis Interactive Entertainment. They developed and released Atlantis Evolution in 2004 followed by The Secrets of Atlantis: The Sacred Legacy in 2006.