In an interview on October 25, 2012, director Rich Moore said that he and Disney have ideas about a sequel that would bring the characters up to date and explore online gaming and console gaming: “We talked about arcade games. Imagine if we went into home systems and other kinds of platforms or online, or mobile games or something like that. We can’t end with just arcade cabinets from the 1980s.”
Moore stated that many of the crew and voice cast are open to the sequel, believing that they have “barely scratched the surface” of the video game world they envisioned. He also stated that he plans to include Mario and Tron in the sequel.
In a 2014 interview, the film’s composer Henry Jackman said that a story for the sequel is being written: “I can’t tell you more, not because I’m being coy, but I believe that it is officially on the cards. I don’t know any more other than a story is indeed being written.”.
(Sources: Wikipedia, Game Informer, IGN, and Collider)