Mojdom

Recently, I started a new world in Minecraft in single-player mode. Like I always do, I mine trees to get wood and to make some tools and a crafting table. After five minutes of climbing through hills and mountains, I started seeing a small mansion sitting in the middle of a desert. The house looked a bit destroyed, it was made of dark oak planks, and it has four glass windows (two on the top, two on the bottom). The only thing it doesn't have is a door, it didn't show any form of a way in. When I looked through one of the windows, I saw a face, it was white and it looked sad. I started to think that someone must've joined the game without me noticing and decided to build a house, but when I checked, there was no one but me in the game. I decided to approach the house and go in by breaking through the window with my wooden pickaxe. Inside the house was empty, there were no rooms, no lighting, nothing. The only thing there is was some stairs that lead up to the second floor. I went up the stairs and saw a bedroom with redstone torches as lighting. It was weird, because I didn't see any source of light through the windows outside. I started to feel uncomfortable and not wanting to stay in the house any longer, so I ran back downstairs and went through the window where I broke in. When I got out of the house, I ran back to the mountain where I spotted the house from. While I was running, I turned around to look at the house again. But when I did, I saw a dark figure, with the same face I saw earlier, standing on top of it. I decided to take a screenshot of it, but when I was about to take it, my game froze for a second and then it crashed. I couldn't believe what I experienced, I started to get paranoid. I was able to log back into Minecraft, when I got back in, all of my worlds were gone, not a single world was on there. Now, listen very carefully, if you ever start up a new survival world and see a small house in the middle of nowhere, don't go near it, run in the opposite direction away from it or you might be the next victim.

Trivia

 * Mojdom comes from the word "Moj dom", which is Croatian for "My home".
 * It is unknown what gender Mojdom is.
 * It's rumored that Mojdom can appear in any version of the game.
 * Mojdom is related to Entity 303 due to having some of the same abilities.