The MCU started eight years ago and, despite being a bit too formulaic at times, it’s still going strong, and it reinvents itself with each new release. If franchises like Iron Man and Thor were the ones to successfully introduce the fans to this shared universe, the later franchises were the ones to cement the MCU as one of the most successful of all time.

Guardians of the Galaxy is obviously worthy of being mentioned here. It surprised everybody, as did Ant-Man "“ these were unknown Marvel properties among the general audience, but they killed it with the critics and at the box office (one more than the other, of course).

And the future is brighter than ever, with acclaimed actors and directors being added each year, titles scheduled until 2020, and the promise that the shared universe will never end.

This being said, let's take a step back and see which of the movies released until now have been the most successful. For this list, I won't check the just the box office success, but also the response of the fans when the movie was released.

And, as always, here is the necessary spoiler warning!