Instead of Mario shooting fireballs at enemies, in Super Enemy Fire the enemies can all shoot fireballs at Mario. And to add to the challenge, power-ups have been removed.
This ROM hack was originally created for an offline race at AGDQ 2017.
No-Intro Name: Super Mario Bros. (World)
(No-Intro version 20130731-235630)
File SHA-1: EA343F4E445A9050D4B4FBAC2C77D0693B1D0922
ROM SHA-1: FACEE9C577A5262DBE33AC4930BB0B58C8C037F7
Patched File SHA-1: 58957659A529713675C441836775677D3172B9F6
Patched ROM SHA-1: 0553CB51845764D0EB758F1038256D6DD349B224