I'm quite sure that this is made from a publicly released "rom." There is a _very_ large Japanese fanbase devoted to making original SMB1 hacks.
in my very tired state I thought that said tonkatsu at first, at which time I fell out of my chair laughing... when I recomposed myself I realized i was delerious and it was in fact tonkachi... which isnt nearly as funny... I want a tonkatsu mario game T_T ROFL. Maybe he could be a butcher or something
:smt017 well, i know that there is some crazy world after beating mario bros 2 (j) these world are named with letters too, and are very strange , but i never saw those ... and they seams to be unproffesionnaly maked. :smt017