How to make a SMB3 rom hack using FCEUX?

[JUSTARANDOMPERSON]

I just want to know how since there was not that good tutorials on Youtube. Can someone help me? I'd appreciate it.

 

[VinsCool]

Make? no, that's not with an emulator.

Play the hack? Sure. Just load the patched smb3 rom like any nes games.

 

[Mazamin]

You can, you need knowledge of hex editing and a rom map that you can found on datacrystal

 

[JUSTARANDOMPERSON]

You can, you need knowledge of hex editing and a rom map that you can found on datacrystal

Thanks!