"[G]ame development almost never starts with story. Every time I go to a convention, I meet fledgling writers who tell me they have an amazing game idea they’d love to pitch me. But the truth is, games aren’t pitched like movies or TV. What gets a game green lit is invariably tech or gameplay driven. A studio discovers they can do incredible realtime zero-g simulation with their engine? We’re doing a space adventure! Did the design team discover some super fun time-based game mechanic? Let’s do a time travel game! Games are built around two simple questions: 'Where does our tech shine?' and 'What is fun to play?'"Read the rest here.
Related Reading: Should games even bother trying to tell a meaningful story?