Transformers is a series of American science fiction action films based on the franchise of the same name begun in the 1980s. Michael Bay has directed the first five films: Transformers (2007), Revenge of the Fallen (2009), Dark of the Moon (2011), Age of Extinction (2014) and The Last Knight (2017). A spin-off entitled Bumblebee, directed by Travis Knight and produced by Michael Bay, is scheduled for December 21, 2018. The series has been distributed by Paramount Pictures and DreamWorks.
Aside from Bumblebee, the live-action film series has received mixed-to-negative reception, with criticism of the plots, sophomoric humor, overuse of product placements, overuse of CGI, and the running time of the films, but praise of the visual effects, action sequences and music. It is the 13th-highest-grossing film series, with a total of $4.3 billion; two films in the series have individually grossed over $1 billion.