Thread:CrazyNaut/@comment-920954-20180228234041/@comment-920954-20180301005821

They were meant for the original, so much that they are actually coded and fully playable, just inaccessible by normal means. I discovered them by mere accident by toying around with a hacked version of the game. That was back in 2015, now I totally forgot what exactly I did to access them. I got to tell you that I'm perhaps the only non-developer/tester in the world to have seen those levels or, at least, someone who documented their existence. That's why I asked you this.