I know all about it. Advocating ROM usage is a no no here, even though you only linked to a patch, not a ROM. There are people who also create reproductions of the carts for NES.

Other Super Mario Bros. hacks made to resemble the licensed game-

VS. Super Mario Bros.
ALL NIGHT NIPPON SUPER MARIO BROS.
SUPER MARIO BROS. (FDS) (no hack available, but minus world is different)