Holy smokes I actually played that one when I was like eight, it was on a disc full of old Mario fangames that I ran across on a fleamarket and I even still have it :
That was before I used the internet, so the concept of Mario games on the PC blew my mind back in the day. From what I recall it was one of the more interesting ones, but also very bizzar with things like the ending where Mario becomess a deity like figure. Regardless of how bad it probably is nowadays it did manage to stick in my head, alongside this one :
Not gonna lie seeing these again gives me the oddest sense of nostalgia.