This hack has harder and more creative levels mainly, some sprite changes and a little bit of text changing. Every level is changed from the original.
No-Intro Name: Super Mario Bros. (World)
(No-Intro version 20130731-235630)
File SHA-1: EA343F4E445A9050D4B4FBAC2C77D0693B1D0922
ROM SHA-1: FACEE9C577A5262DBE33AC4930BB0B58C8C037F7
Patched File SHA-1: 2AF37CD4BBFC3358DF82D5FF87801444A9DC4D51
Patched ROM SHA-1: B7A9CDD58297DA060CBBDD614329AF597B4B1C11