Clash of the Titans is a 1981 fantasy and mythology movie based on the myth of Perseus. Stop motion animation is used to a large extent in the film to animate the various monsters. The special effects creatures were created by Ray Harryhausen, who retired from filmmaking shortly after the movie was released. Stephen R. Wilk wrote in 2000 that "most people today who are aware of the story of Perseus and Medusa owe their knowledge to the 1981 film Clash of the Titans."
Clash of the Titans was released on June 12, 1981 (Raiders of the Lost Ark was also released on the same date). The movie was a box office hit, grossing $41 million domestically alone, on a $16 million budget. It was the 11th highest grossing film of the year.[