If the stories of the unions were passed on and embraced throughout history, and eventually, there was an arcade named after those stories in the modern day called "The Union X Arcade" Thus, the arcade appears in KH3 and has an "exclusive new world" in it....Wreck-It Ralph. Boom. Lol. Just my mind spitballing a crazy Nomura idea that I feel like he'd pull. Things would surely be going down if that happened.