Tip: After editing your overworld, make sure to use an EMPTY save file, as save files with progress may load Mario's position based on previous versions of the overworld. Note that altered level flags will also only take effect on new save files.
even though this is a demo i hope to see the wacky enemy designs usually seen in the wario hacks in the later versions. though when i did download this i was kinda expecting a story where wario would act as an imposter to mario getting all the gold he can get as an award for his "Heroic" actions and you would get to fight the bosses which would be the cast of the mario heros and yoshi would know first placing a gimcick to the hack where yoshi rejects you and you can only be able to make use of the baby yoshies.
Hack started well, with some decent (even if simple) design, but the quality decreased a lot on the second half - the two last levels were shorter and less fun than the first ones. Still good enough to be accepted, but I strongly recommend taking some time next demo, as this one felt rushed at the end.