This question might seem stupid since, except biographic or historical documentaries, every movie contains a degree of fiction(fictional characters, fictional situations, etc.) My question was about inventing, making up stuffs then adding them in a script. Like, can you place your action in a completely imaginary city? My idea was about a fictional modern city, where the action takes place. Or, can you create entire fictional countries or continents, or empires and civilizations? I mean, these are big things. Another idea involved a war between fictional deities(of course, worshiped in these fictional lands). Can you write this?