Mostly graphical hack that makes the game resemble the Super Mario Bros. Super Show! animated series. Enemies are modified to match their appearance in the show, with King Koopa as the final boss.
Story:
Evil King Koopa and his Koopa pack have taken control of the illusive Subcon Land and imprisoned all of its inhabitants in a large jar. Mario, Luigi, Princess Toadstool and Toad set out on a journey to stop King Koopa before he takes control of the Mushroom World. Don't let Koopa koop away!
Database match: Super Mario Bros. 2 (USA)
Database: No-Intro: Nintendo Entertainment System (v. 20210216-231042)
File SHA-1: 26639636EF7B2E339B745959ECFD679AA7C640DE
File CRC32: 8AA4ACE0
ROM SHA-1: 43AC7C7AAF1846EAD7B544302BB9131E4964FD32
ROM CRC32: 57AC67AF