How To Write A Script For Branching Dialgoue . A script (also known as a screenplay) creates a free outline of the whole story to be acted out by actors for a film, a stage play, a television program example, etc. The star of your movie should have at least one “big speech.”. Viking or Demon?? Scripts from demonriisu.blogspot.com A script (also known as a screenplay) creates a free outline of the whole story to be acted out by actors for a film, a stage play, a television program example, etc. For example, you’ll often hear how “script dialogue should…”. The next most popular dialogue system in video games is dialogue trees.