Blood Moon

The Blood Moon is an event that has a small chance (1/7) of happening every night that is not a new moon. They will not occur unless at least one player has more than 6 hearts. It is heralded by the message "The Blood Moon is rising...".

Blood Moon effects

 * The store inventory of some NPCs change.
 * The spawn rate of monsters on the surface increases, and The Groom has a chance to spawn.
 * Zombies gain the ability to open doors after punching them several times (10 for one zombie). This can put the player's home and NPCs in peril, if they are not guarded appropriately.
 * Monsters will also spawn inside cities, despite the natural spawn protection they give.
 * All Bunnies and Goldfish will become corrupt.
 * Deathweed will bloom.

Tips

 * The Blood Moon can benefit intermediate players by providing quick money and items.
 * Newer players may want to barricade themselves indoors during the event. Doors can be barricaded easily by placing blocks of any type directly next to them. Other placeable items like the Table will prevent doors from swinging inwards, which is the only way zombies may enter. Placing all doors at least two tiles above ground, or with a 2x2 trench in front of each, will also prevent intruders.