Super Mario Bros. 3: Quick Bros.

This is Quick Curly’s first official attempt at ROM hacking. In this SMB3 hack, Mario and Luigi must save Princess Toadstool, who has been kidnapped by Bowser for the five hundredth time. They must travel through five different Realms before they can enter Dark Land, which may be small, but it is deadly. Changes include edited graphics, specifically the status bar. Players will advance through new levels, ranging from easy to hard difficulty. All the main text has been changed, including the Bonus Games, Toad Houses, End Castles, Princess Toadstool’s letters, and the World Name Credits. A big thank you goes out to Googie, for if it weren’t for him, this hack would never have been possible.
WARNING: There may be a few mature themes, but there is no swearing.

Super Mario Bros. 3 (U) (PRG1) [!].nes
Checksum-16: E846
Checksum-32: 02A4E846
Checksum-64: 0000000002A4E846
CRC-16: CF5C
CRC-32: 0B742B33
MD-5: 86D1982FEA7342C0AF9679DDF3869D8D
SHA-1: 6BD518E85EB46A4252AF07910F61036E84B020D1
SHA-256: 4377A7F5E6EB50BDD2AC6F249BF1A7085500ACA8EB41F38545C3A2731C51A579