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The Marvel Cinematic Universe (MCU) is an American media franchise and shared universe centered on a series of superhero films produced by Marvel Studios.
The films are based on characters that appear in American comic books published by Marvel Comics.
The first MCU film is Iron Man (2008), which began the films of Phase One culminating in the crossover film The Avengers (2012).
Phase Two began with Iron Man 3 (2013) and concluded with Ant-Man (2015).
Phase Three began with Captain America: Civil War (2016) and concluded with Spider-Man: Far From Home (2019).
The franchise has been commercially successful and has generally received positive reviews.