Development of Tron began in 1976 when Lisberger became fascinated with the early video game Pong. He and producer Donald Kushner set up an animation studio to develop Tron with the intention of making it an animated film. Indeed, to promote the studio itself, Lisberger and his team created a 30-second animation featuring the first appearance of the eponymous character. Eventually, Lisberger decided to include live-action elements with both backlit and computer animation for the actual feature-length film. Various film studios had rejected the storyboards for the film before the Walt Disney Studios agreed to finance and distribute Tron. There, backlit animation was finally combined with the computer animation and live action.