While it also works on multiplayer servers, it is not advised to use it. It is pretty easy to use, when it is installed, just press “X” and xray turns on. Unlike hacked clients, the xray mod does not need a hacked client to work – it’s a mod (like the name refers to). It was originally developed during the Minecraft beta 1.4, but have since been updated to latest Minecraft versions. The XRay Mod (x-ray), gives the player an advantage over other players with an added ability to see special ore blocks like coal, iron, gold, diamonds etc.