4. Captain America: Civil War
Civil War was the first MCU movie to portray the most number of Superheroes within one movie and it was done with great precision and perfection. The movie told an amazing story and we all just loved it. It had to earn big and it did. Captain America 3 grossed $1.15 Billion worldwide at a production budget of $250 Million.
The Civil War resonated with the fans and featured some of the coolest action scenes ever put on screen.