File with a .MCMETA extension contains animation configuration data – textures, sounds, pace, duration and fonts, used in the process of creating appearances of a world in Minecraft game. Data is stored in form of plain text. It enables to change settings without interfering with the source code of the application. Minecraft game is a popular title created by Mojang Microsoft Studio, which gameplay is about creating a world with blocks and experiencing adventures within it.

MCMETA files are stored according to specific syntax which is based on inserting names of parameters which are being configured and their values after a colon in curly braces {}, which can be nested, for instance: { "pack": { "pack_format": 4, "description": "Example Resource Pack" } }. User can open them for instance with the notepad. MCMETA resource files correspond to every animation within the game, however, the game does not open these files but instead it only refers to them.