En mai 2003, il est annoncé que Keira Knightley prêtera sa voix au personnage d’Elizabeth Swann dans le jeu vidéo Pirates des Caraïbes : La Malédiction du Black Pearl.
Todd Vaughn, executive producer of the Pirates of the Caribbean videogame:
“We are thrilled to have Keira Knightley join the project. Adding her talent and voice to the game greatly enhances this deep, rich gameplay experience.”
And Keira had this to say:
“I’m delighted to have the opportunity to work on this exciting project. The Pirates game will be a wonderful extension of the film and I’m sure the gaming public will enjoy it immensely.”