Originally posted by Pandaren
Feeling better, Treeki? 
Anyways, looks neat. I guess it's a hex editor of some sorts...?
Not exactly.
Each of NSMB's level files is split up into 14 blocks. (I used to call them files or subfiles, but that's not really a good term for them.)
Normally, they need to be hacked using a hex editor.
This tool is a simple tool that features (or will feature):
• View each file in hex mode (Complete, I might add editing later, but don't count on it)
• Edit sprites/enemies (Almost complete; I'm coding saving now)
• Edit entrances/exits
• Edit views (or cameras as I used to call them)
• Edit other level metadata, like the tileset and such (I might not do this seeing as my docs for it are inaccurate)
Basically, you extract a level file from the ROM (using Nitro Explorer, obviously) and then edit that. When you're done, you insert it back.
Later on I might add support for loading/saving level files in a ROM, but I'm not sure yet.
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