Real tennis, often called "Royal Tennis"—one of several sports sometimes called the sport of Kings—is the original indoor racquet sport from which the modern game of lawn tennis, or tennis, is descended. It is also known as jeu de paume in France, "court tennis" in the United States, and "Royal Tennis" in Australia.
Real tennis, or Royal Tennis, was popular with and thrived among the 17th-century nobility of Europe, including Emperor Gustavus Adolphus. In some parts of Europe women were allowed to play tennis, but in others, they were not. William Cavendish, 3rd Earl of Devonshire was an avid player of tennis and noted the differences between royal tennis and modern tennis during his stay in Grantville.