What happens when you input the incorrect code in the final level of New Super Mario Bros 3 (SKJmin)

Having looking around YouTube for a long time, I've come to a realisation that there is not a single YouTube video that shows this off, and it's a real shame because this is something I have been genuinely curious about for so long. That's why I made this video, so here we go.

In this video, I show you what'll happen if you input the incorrect code in the final level of New Super Mario Bros 3 (the ROM hack by SKJmin, and the original (version 1.0) released in 2010). This is never before seen on any YouTube video, this one is the first!!!

(SKJmin)