Firstly, authenticity matters. If it stays true to the essence of the real story, like in 'The King's Speech', it can draw in audiences. Secondly, strong acting. Good actors can bring the real - life characters to life, as in 'Bohemian Rhapsody'. Thirdly, effective storytelling. Presenting the story in an engaging way, like 'The Theory of Everything' did with Stephen Hawking's story.
For a movie ride based on a true story to be successful, it should have a relatable theme. Take 'The Pursuit of Happyness' for example. The struggle for a better life is something many can relate to. The movie also needs good cinematography to set the mood. In 'Saving Private Ryan', the battle scenes were so well - filmed that it added to the overall impact. And of course, a good script that doesn't deviate too much from the truth while still being entertaining, like in 'Goodfellas' which was based on real - life mobsters.
A successful movie based on a true story needs to capture the emotions of the real events. In 'Hacksaw Ridge', the heroism and faith of Desmond Doss were so well - portrayed that it moved audiences. It also helps if the movie can shine a new light on a well - known story or introduce an unknown but interesting one. 'The Big Short' did this by making the complex financial crisis story accessible and engaging. Additionally, having a good marketing strategy is important. 'Black Swan' was marketed in a way that built up anticipation and it was a hit even though it was a darker, true - story - based movie.