LOS ANGELES (Reuters) - The script never got in the way of a good fight as comic actors Will Ferrell and John C. Reilly improvised their way through family warfare in the movie “Step Brothers,” which opens on Friday. ... Ferrell said McKay put improvisation ahead of the script, which the two co-wrote.

Did Step Brothers have a script?

To celebrate the 10-year anniversary, The Ringer put together a lengthy oral history detailing the euphoric making of Step Brothers. In the feature, director Adam Mckay explains that he, Ferrell, and Reilly wrote nearly 200-pages of script that they had to cut down significantly.

Who wrote the script for Step Brothers?

2008's Step Brothers was written by Oscar-winning screenwriter Adam McKay and the film's costar Will Ferrell (John C. Reilly contributed to the story).