How many sequels were there to the film quiz?

How many sequels were there to the film quiz?:

"In the film industry, Guttenberg's law states that quality of sequel = (quality of original)/(number of sequel*2).

Below are some films, but how many sequels have they had?

Simply click on 'There was more' if you think 'There was more'. Or 'That was it' if you think 'That was it'."