The golden rule is this: If you change things in a way that the game could never have written itself, you're at risk. However, problems often arise when map makers use tools to edit NBT in a way that couldn't theoretically be accomplished in-game. You could change a chest's content in game, and a tool such as MCCToolChest writes data to the NBT as if you had done just that. Most features in Minecraft are built to be played, not edited with external tools. However, there are cases where NBT editing has led to problems when Minecraft updates in a way that changes how a particular tag is written or read by the game. For instance, you might use a tool to edit the name of a mob by simply changing the value of its CustomName tag rather than having to use a name tag and anvil in-game.

Using tools such as MCEdit or MCCToolChest to edit NBT can have powerful results and save creators a great deal of time. For example, a zombie pigman would contain, among many others, an ID tag with a value of zombie_pigman.

NBT is essentially a list of tags and corresponding values. It's recommended that the following be completed before beginning this tutorial.įor years, it's been a common practice for Minecraft map makers to use external tools to edit 'NBT,' the data stored within entities, items, and some blocks that stores information such as names, damage values, or age.

Nbt explorer online