Unlike most animated films, the principal actors regularly recorded audio sessions together in the same room, a situation which led to a lot of improvising.
(at around 14 mins) The bartender game which appears, Tapper (1983), was controversial in real life. The game featured a bartender serving mugs of Budweiser beer. The game was intended for adults to play in real life bars, but eventually made its way into kid-friendly arcades where parents became upset at the content. Consequently, Bally Midway recreated a nearly identical version called Root Beer Tapper, with a soda jerk character instead of a bartender. The version in Wreck-It Ralph combines the bartender character of the original with the root beer of the later version.
Early in production it was considered to keep all characters in their native graphic quality, essentially making Ralph look 8-bit the entire time. This was deemed too difficult for making Ralph a sympathetic, lovable character.
For a time, Disneyland guests were able to play a "Fix-It Felix, Jr." arcade game at the Starcade in Tomorrowland near the exit of the Space Mountain. The game was also installed for a time at DisneyQuest before its closure in 2017. Many of the promotional game cabinets can still be found in arcades and movie theaters across the country.
(at around 23 mins) The train station of Niceland shows that the population is 224x256, the common resolution of an 8-Bit game.