A sequel to
https://www.romhacking.net/hacks/5245/ consisting of 12 brand-new levels (3 worlds), along with new custom music and animations. Mario has found himself in a dark realm and must retrieve the skeleton key before it's too late.
Level names:
Note: None of the warp pipes can be entered.
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