While many have felt the overall quality of Mighty No. 9 was not that good despite its long development time, many seem to not be complaining about how long the credits are.
As those who paid attention to the Kickstarter campaign, there was a total of 67,226 backers from Kickstarter alone and most of them had their names listed in the credits. While some do have their names, most are just listed as “A Generous Backer” with a Mighty No. X number designation. Needless to say that with this many backers, GameXplain was able to reveal that the credits are over 4 hours long if you try and sit down through it from beginning to end.