Minecraft wiki entry for Creating_a_resource_pack, associated text: Minecraft has a unique mechanic that allows for text and media files to be added to the game files that allow for everything from custom block textures and models to custom credits and sound events. This tutorial is meant to help with setting up the file systems in order to implement them. Since the files are essentially code, there are technical rules for how to format files and certain things may change from version to version. As such, what is written in this tutorial may not apply to every situation, but in the case where the difference is significant and specific, it will provide a framework on the changes needed for different versions.