This is the true version of Strange Mario Brothers: The Lost Levels.
NOTE: In worlds 3-1 and 6-2, you're going to have to find the vine to find the flagpole, but in 3-1, it's not so hard. In world 6-2 though, it's in the last block that's above the tenth pipe in the level.
Super Mario Bros. (JU) (PRG0) [!].nes
CRC32: 3337EC46
MD5: 811B027EAF99C2DEF7B933C5208636DE
SHA-1: EA343F4E445A9050D4B4FBAC2C77D0693B1D0922