Mario Bros: The 1 Day Showdown is a hack that was created in 1 day with ASM modifications, all graphics imported from SMW, and a completely new gameplay change. You collect coins by shooting the enemies from Lakitu, and you have to survive it for 100 seconds. This hack will most likely receive a redux one day.
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