Blockbuster movies are very popular. This causes more movies to be made using the same story and characters. For example, the "James Bond" movies all tell stories about the British spy named James Bond. The "Star Wars" science fiction movies all tell stories about spaceships and outer space wars. Art films are very rarely made into franchises with sequels. This is because directors of art films are often trying to create a new movie with new ideas for each movie they make. Some art films do have sequels. This will most often happen when the movie was very well liked and the director wanted to tell more stories using some of the same characters. 