Hello! everyone
I'm going to introduce you to a reliable and simple application for editing Super Mario Bros. levels. It lets you create new zones, add, delete, move and resize objects on all zones, and can also easily create pointers for pipes, vines and so on. You can also make numerous modifications to an engine.
So it's an ideal application for editing Super Mario Bros. levels and for starting to create hacks for this game. The application is in the Attach files
Good trip to the world of RomHacks