This is SMB NES, but easier. What changed:
-1 - SDS deleted everything in enemies exculding 2 1-1 last goombas.
-2 - SDS added bridge to 1-3
-3 - now last level is 1-4,not 8-4.
SysDataSoft made this to make game easier.
Database match: Super Mario Bros. (World)
Database: No-Intro: Nintendo Entertainment System (v. 20210216-231042)
File SHA-1: EA343F4E445A9050D4B4FBAC2C77D0693B1D0922
File CRC32: 3337EC46
ROM SHA-1: FACEE9C577A5262DBE33AC4930BB0B58C8C037F7
ROM CRC32: D445F698