Ever since ‘Iron Man’ and ‘The Dark Knight’ impressed audiences in 2008, superhero movies have been a major player in the film industry.

Marvel have been at the core of this wave, with the Marvel Cinematic Universe raking in billions of dollars at the box office. Characters like Iron Man, Captain America and Thor have become household names during the 2010s as the studio produced hit after hit after hit.

In recent years though, Marvel have suffered a relative downturn in success. Their projects aren’t always getting rave reviews and their latest movie, ‘The Marvels’ starring Brie Larson, is predicted to have a disappointing opening weekend at the box office.

Hannah and Adam speak to Digital Spy writer Janet Leigh about the creative side of Marvel, and box office analyst Tom Lashley weighs in on what the numbers are telling us about the MCU.

Email: whatintheworld@bbc.co.uk WhatsApp: +44 0330 12 33 22 6 Presenters: Hannah Gelbart with Adam Chowdhury Producers: Alex Rhodes and Emily Horler Editors: Verity Wilde and Simon Peeks