Transformers: Age of Extinction is a 2014 science fiction action film based on the Transformers franchise. It is the fourth installment of the live-action Transformers film series and stars Mark Wahlberg in the lead role. A sequel to Transformers: Dark of the Moon, the film takes place five years later, after the Decepticon invasion of Chicago. Like its predecessors, the film is directed by Michael Bay and executive produced by Steven Spielberg. Ehren Kruger is the film's screenwriter, having written every Transformers film since Revenge of the Fallen. The film features an entirely new cast of human characters and is the first in the series to feature the Dinobots. Returning Transformers include Optimus Prime, Bumblebee, Ratchet, Leadfoot, Brains, and Megatron (now known as Galvatron). The film was released on June 27, 2014, in IMAX and 3D.
Reception to the film was generally mixed among casual film-goers, but negative among film critics, who expressed an overall dislike for the acting, directing, length, and writing. It received an average rating of 18% on Rotten Tomatoes, making it the lowest rated film of the franchise, although some praised the action scenes, visual effects, and Wahlberg's and Stanley Tucci's performances. The film was a commercial success, grossing over $1 billion in worldwide box office revenue. A fifth film is scheduled for a summer 2016 release.