The original Superman film was a huge success. The movie grossed more than $300 million at the box office and is widely considered a classic, due to its extremely positive critical reception and the numerous awards it won. A sequel therefore was almost certain, with development on Superman II starting
almost at the same time as the original film. With production halted in order to allow director Richard Donner to concentrate on the first entry, the studio then decided to replace the director with Richard Lester with almost all of the work done. This led to many of the staff working on the project, quitting while several important scenes were re-shot, leading to the disappointing Superman II.