Enigma: Rising Tide is a naval vehicle simulation developed by Tesseraction Games and published by Dreamcatcher Interactive. It was released for the PC in August 2003. Enigma is an alternate history game that takes place in the World War II era.
Tesseraction Games was purchased by Resurgent Interactive in October 2007, and they reported two Enigma-related titles being in-development: Enigma: Rising Tide Chapter Two and an add-on for Enigma entitled Hotel Da Volta.
Tesseraction Games officially went out of business on December 19, 2008, due to Resurgent Interactive going into default. The final release of Enigma: Rising Tide was version v2.1.3a dated February 2004.
The basis for the events in Enigma: Rising Tide is essentially that the British passenger ship Lusitania was not sunk by a German U-boat in the First World War, but instead completed her voyage without incident. This event, or lack thereof, basically prevented the United States from entering the war on the side of the allies, thereby dooming the French and BEF (British Expeditionary Force) to defeat from the German offensives in 1918. With total victory in France, the German Empire formally annexes France and Britain (which was occupied as a result of the treaty that ended the war), and becomes the German Weltreich (World Empire). Upon the occupation of Britain, Winston Churchill- then Britain's chief naval strategist- flees to Hong Kong with the rest of the British government on the fleet flagship, the new battlecruiser HMS Hood.
Enigma: Rising Tide also has a Gold Edition version available in some stores. It can also be downloaded from some websites such as GameSpot. Gold Edition includes 3 playable battleships, the soundtrack from the game, and improved graphics. NOTE: The downloadable version does NOT include the soundtrack.