The 7th Sea RPG is set in a world that draws direct influence from the literature of 17th century Europe. Each country in the world can be compared to a European kingdom but is an exaggerated representation. Sorcery is a large part of the world with many types available to players. The dominant religion in the world, the belief in Theus and his prophets, is based on a form of Gnostic Christianity and features a parallel of the Spanish Inquisition. There are also references to the Knights Templars, Masons and the Invisible College of scientists.
All major European powers have their representations in Théah. Avalon (England), Castille (Spain), Montaigne (France), Eisen (Germany), Ussura (Russia), Vendel/Vestenmanavnjar (Netherlands / Scandinavia) and Vodacce (Italy) are the main cultures of the game. There is also Inismore (Ireland), Highland Marches (Scotland), the Crescent Empire (Ottoman / Arab), Midnight Archipelago (Caribbean and North Africa) and the secretive Cathay (China / Korea / Tibet).