The Goblin Army is a horde of unique Goblin enemy characters, consisting of 5 different variations, who have a 1/15 chance of invading on a particular day or night, provided a player has achieved a certain level of advancement in the game (see Conditions). Most goblin monsters (besides the Sorcerer) can both open and break down doors. When a door is broken down, it appears as a thrown-away item on the ground that can be picked up again by a player and replaced. One way to keep goblins from breaking a door is to place a block behind the door.