How can you use schematics in Minecraft? Well, in this video, we show you exactly how to use the Litematica mod in order to add schematics to Minecraft. What. Software Overview. NBTExplorer is a cross-platform, open-source tool used to edit Minecraft save files. It is based on the NBTedit program and built on top of Substrate, a .NET/Mono SDK written in C#. The program supports editing of several Minecraft saves, including .NBT, .MCR, .MCA, .SCHEMATIC, and .DAT files.