1 definition by TMachine97

A case in which a film/video game/book is popular when it is released, however, it's popularity or general enjoyability decreases when the sequel is released. Sequelitis is particularly common with video games as a sequel may have improved graphics, more intuitive controls, etc.
"Batman Begins" suffers from sequelitis because "The Dark Knight" was so much better
by TMachine97 December 30, 2015
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