10 Creepy Secrets Behind Classic Video Games

4. The Disturbing "Ghostly Room" - Call Of Duty: Finest Hour

Several years before Call of Duty introduced Zombies to the franchise, the shooter's first-ever console installment, Finest Hour, boasted surely the creepiest Easter egg in the history of military FPS games.

Early on in the Underground Passage level, players can find a seemingly unopenable door, yet if you go through the oddly specific steps of throwing two grenades at the door, pressing the action button, and then throwing another grenade, the door will indeed open.

At the end of the tunnel is the so-called "Ghostly Room," a circular room with no ceiling that contains pictures of children and cats hung on the wall, while a small tank and small plane can be seen moving around the room, there's a cradle with the ghost of a young boy sitting in it, and most disturbing of all, a gigantic rat in a cage.

It goes without saying that this all conflicts massively with the more "realistic" tone of the game otherwise, even if 99% of players have never even seen it.