Add

This tool lets you add new data, including backgrounds, room sprites, rooms, tilesets, spritesets, and animated tilesets/graphics/palettes. For each one, you can choose whether you want the data to be blank or be a copy of some existing data. The copy will not share pointers with the original, so you can safely edit the new one without worrying about messing up the original.

You should use/modify all of the existing data before using this tool. You can only add one new thing each time. This should encourage you to only add new data as you need it.

For some types of added data, MAGE needs some way to keep track of how many there are (rooms, tilesets, etc.). Therefore, when you add this type of data and save your ROM, MAGE will create a project file with the same name as your ROM in order to keep track of added data. This file will automatically be opened with your ROM as long as they have the same name, so you should not modify the project file name or its contents.