This hack will make Mario and Luigi huge, twice their size.
The levels remain basically the same, but some changes have been made to accommodate the resizing of the player.
There is also an optional invincibility patch.
v1.2 changes:
-Implemented giant fireball.
-Tweaked firebar hitbox.
v1.1 changes:
-Hitbox fix. The horizontal width hitbox is now twice as big as the original game.
-Some bug and level fixes.
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