Mighty No. 9's credits are nearly 4 hours long
70,000 is a huge number of backers to thank
While Mighty No. 9 will go down as being more (in)famous for its troubled development and flawed final product, Developer Comcept at least took the time to include a thank you to over 70,000 individual backers. The official GameXplain YouTube channel posted a full video of the entire credits which clocks in at just under 4 hours. Which is about the same amount of time as it takes to finish the game.
Comcept, Publisher Deep Silver and Keiji Inafune himself have all taken a lot of heat for Mighty No. 9 both from the multiple delays, denials of said delays, and the shoddy trailer that showcased an inferior game from the game that was originally pitched (though to be fair, it did reflect the final product so at least it wasn't lying).
If you are one of the Mighty No. 9's 70,000 backers, I hope that you feel like you got your money's worth. But if you didn't, take it as a lesson on backing unfinished projects (a lesson I'm currently learning myself).
Source: GameXplain Youtube Channel