Every game has its legends, and Glitchworld is one of them. I've seen so-called evidence debunked plenty of times. It always turns out to be a mod, a hack, or straight-up fiction. Without solid reproducible steps or confirmation from Nintendo, it's just another tall tale to me.
Guys, c'mon. There's no chance this is legit. Either a custom job or someone slapping a fake label onto a bargain bin game. Facebook wouldn't make a 'game' without blasting it all over the internet. I mean, come on, what would that even be? Farmville: The Adventure Continues? 😂