Short answers, pulled from the story.
The concept of Wreck-It Ralph first emerged in the late 1980s under a working title called High Score. Disney redeveloped and reconsidered the project multiple times over the following decades before it evolved into Reboot Ralph during the mid-2000s.
Director Rich Moore sought to capture an authentic video-game world by including real characters like Bowser, Clyde, and Doctor Eggman while focusing on creating new ones. John Lasseter served as executive producer and described the story as an eight-bit bad guy traveling through an arcade to prove he is good.
The high score on the main screen of Fix-It Felix Jr reads 120501 referring to Walt Disney's birthdate the 5th of December 1901. This detail serves as an Easter egg hidden within the game interface of the movie.
The Bad-Anon villain meeting features well-known figures such as Bowser, Clyde, Doctor Eggman, M. Bison, and Zangief. These characters gather together to help villain characters who have been ostracized from their games.
Ralph Breaks the Internet serves as sequel released the 21st of November 2018 following original film timeline. This installment follows Ralph and Vanellope traveling to internet replacing part needed for Sugar Rush preventing Mr. Litwak disposing game entirely.