Super Mario Bros.: Super Mario Bros. - Jeansowaty Levels - The Next Episode #1

An old idea came back to life. Hack done in one sitting, however E-1 and E-2 were done much earlier and have only been heavily revised. After Peach has been rescued by Mario, it turns out that Jeansowaty's Land has many more Worlds which are infested by Bowser's mercenaries! Sometimes random objects have been mutated and turned into Bowser Impostors! This is World E only. As it's not based on SMB2j anymore, it's a bit more unique.

-E-1 is a castle-set overworld. It contains a coin room.
-E-2 is an underwater level filled with an unknown red substance.
-E-3 is a dark lava cave.
-E-4 is a normal castle, well maybe with just tougher jumps than before.

There is also a secret level which can be unlocked somewhere...

Database match: Super Mario Bros. (World)
Database: No-Intro: Nintendo Entertainment System (v. 20180803-121122)
File SHA-1: EA343F4E445A9050D4B4FBAC2C77D0693B1D0922
File CRC32: 3337EC46
ROM SHA-1: FACEE9C577A5262DBE33AC4930BB0B58C8C037F7
ROM CRC32: D445F698