Stone, dirt, gravel, and andesite are rendered invisible or nearly transparent.
In its first year, the game had limited official support for custom textures. Early players often had to use third-party scripts or manually replace game files to achieve an X-ray effect. x ray texture pack bloxd io 2021
The game engine was updated to validate incoming texture assets, blocking unauthorized external URLs that contained transparency data for solid blocks. Stone, dirt, gravel, and andesite are rendered invisible