"Star Wars: Episode III - Revenge of the Sith" has become the most successful late night opening in history.

After opening to the public in the United States at midnight on Thursday, it took $16 million at the box office, and looks set to challenge "Titanic" as the most profitable movie of all time.

Tickets for the finale of the Star Wars saga went on sale in April, and almost 3,000 screenings of the movie sold out throughout America.