I've made my own SMB levels 5 years ago.
You can change the GFX, add/remove levels, add custom musics, from SMB1 to 3, you can change almost everything, for zero penny.
If you have a legit backup I see no reason why you would buy this tool.
It's for those of us who prefer to use a console, not a PC. Having "fingers on" editing with the Wii U GamePad should prove fruitful to the overall experience.









