The Nether Brick Slab is a half-height building block made from Nether Bricks. It stacks up to 64, and placing one sets down a block of the same name.
Players use it as a crafting ingredient in one recipe, and it also serves as a building piece for adding a lower profile to structures made with Nether Bricks.
Worked out by reading the registry of every Minecraft build Mojang has published, in release order.
| Version | Date | What the files show |
|---|---|---|
| before 18w01a | — | Already in the game when Mojang’s data generator first shipped, in 18w01a (3 January 2018). The files do not say which earlier version added it. |
