Hennig's work on the Legacy of Kain and Uncharted series helped elevate the importance of narrative design in video games. She demonstrated that games could be more than just mindless action, and that they could tell compelling stories with complex characters.

Hennig's success has inspired countless game developers to pursue careers in narrative design and to push the boundaries of storytelling in games. She is a role model for aspiring game developers.

The Uncharted series, led by Hennig, contributed significantly to the popularization of cinematic gaming. Its emphasis on storytelling and action set-pieces, presented with a film-like style, influenced many games that followed.