The first series, simply titled Star Trek, launched a massive multimedia franchise with twelve shows and counting. Some shows were better received than others, but they all boldly pushed the franchise forward in some way. More importantly, Star Trek has become one of the most influential sci-fi franchises in television history, not to mention garnering billions of dollars over the last six decades.
Source：https://www.cbr.com/all-star-trek-installments-ranked-by-imdb/
