A Dark devil box is a monster box containing a Dark devil. Making the box will result in the player gaining 97 Monstercrafting xp and releasing it will give 2 xp. Making the box requires level 56 Monstercrafting. The box can be created by using a Dark stone (which can be bought from the Homunculus' shop for 5,500 coins) and 85 Monster fragments on an Empty monster box while wielding a Crafting necklace. After releasing the box in a Player-owned house a Dark devil will appear and attack the player straight away.