The movie just kept growing and growing. We wanted to keep building out the story. And we thought it would be fun to build a relationship between different characters who all want to play together. But who do they know? Who can they trust? How much money do they have? What kind of skills do they have? So that was kind of our challenge.

How important is character motivation in creating compelling narrative?

There's so much focus on action and excitement, but there's also a lack