X-Ray is a mod for Minecraft that allows players to see through solid blocks, revealing hidden structures, ores, and other underground features. This mod is particularly useful for players who want to explore the game's vast underground world without the hassle of digging and mining. With X-Ray, players can easily locate valuable resources, find abandoned mineshafts, and uncover hidden treasures.

Dungeons, Mineshafts, Strongholds, and Nether Fortresses.

Instead of drawing every block, the mod checked the block type against a list. If the block was "bad" like stone or dirt, the renderer was simply told to skip drawing it. If the block was "good" like diamond or gold, it was drawn normally. This "skip drawing" method was efficient and effective, though it could cause game crashes if the mod malfunctioned, as reported by some users who encountered a fatal Shutting down internal server error when trying to use it on survival worlds.

These packs replace the textures of common blocks like Stone, Dirt, and Grass with transparent or semi-transparent pixels.