Blood Moon

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Desktop version Console version Mobile version
This is the main page whose information applies to the Desktop, Console, and Mobile versions of Terraria.
For the differences of this information on Old-gen console and 3DS, see Legacy:Blood Moon.
BiomeBannerBloodMoon.png
Bestiary Blood Moon.png “The Blood Moon is rising...” Bestiary Blood Moon.png
“

You can tell a Blood Moon is out when the sky turns red. There is something about it that causes monsters to swarm.

— Emote Town Guide.gif The Guide

A Blood Moon is an event that takes place over the course of an entire night, from 7:30 PM to 4:30 AM, affecting only the surface layer.

Blood Moons are signaled by the status message "The Blood Moon is rising...". All of the water in the world, even in the Underground and Cavern layers, will turn blood-red for the duration of the event, including rain and the moon itself.

The event will spawn regular nighttime enemies as well as new, more dangerous enemies in large numbers, while also changing their behavior and spawning conditions (see below).

During a Blood Moon, the ability to speed up time by sleeping in a bed is disabled, but time can still be sped up using an Enchanted Sundial or Enchanted Moondial. Also, the player's Fishing Power is increased by 1.1 times. However, fishing may also spawn unique enemies, the Surly Slime town pet, and a few other unique items.

Criteria

In order for a Blood Moon to naturally occur, the following criteria must be met[1]:

  • It will only occur if at least one player in the world has more than 120 health.
  • It can only occur on nights when the moon phase is not new moon.
  • It will not occur if the Eye of Cthulhu will spawn on that night.
    • Given those criteria, the occurring chance of a Blood Moon is 1/9 (11.11%) chance in regular worlds, or 1/6 (16.67%) chance in Celebrationmk10 or Get fixed boi worlds.

A Blood Moon can be initiated manually at nighttime by using a Bloody Tear and does not require said criteria to be met.

Whether a Blood Moon will occur naturally is determined at dusk each night. Every nightfall has an equal chance of being a Blood Moon and does not change if the previous night was a Blood Moon. It is possible to have four or more Blood Moons in a row and, conversely, a Blood Moon will not necessarily occur even over the course of many in-game weeks.

Contents

Characters
Unique Drops
From Corrupt Bunnies and Vicious Bunnies:
From Corrupt Penguins and Vicious Penguins:
From Corrupt Bunnies during Windy Days:
From Vicious Bunnies during Windy Days:
From The Groom:
From The Bride:
From Drippler & Blood Zombie:
From Clowns:
From any Blood Moon Enemy:
From any Blood Moon Enemy caught during fishing:
From Wandering Eye Fish & Zombie Merman:
From Hemogoblin Shark & Blood Eel:
From Hemogoblin Shark:
From Blood Eel:
From Dreadnautilus:
From Vegetation:
From Fishing:
For Sale
Music

NPC quotes

Some NPCs display unique quotes during a Blood Moon when spoken to:

NPC Quotes 
AnglerAngler

When a quest is available:

  • "I have a request for you! No, I don't care that there's a zombie apocalypse right now!"
  • "Hurry up and listen! I need you to catch something for me right now!"
  • "You know, super scary things lurk in the water during a Blood Moon! You should totally go try it! I'll watch from here!"

When a quest has been completed:

  • "Blood Moon is the worst time to fish! The fish bite, yes, but so do the zombies!"
  • "There's a bajillion monsters running around out there right now!"
  • "I hate Blood Moons! I stay up all night because of all the scary noises!"
  • "You should try fishing when the water is all bloody! It's to die for!"
Arms DealerArms Dealer

"I love nights like tonight. There is never a shortage of things to kill!"

"Man, it's a good night not to talk to anybody, don't you think, <name of player>?"

ClothierClothier

"... we have a problem! It's a Blood Moon out there!"[sic]

DemolitionistDemolitionist

"Hey, have you seen a clown around?"

"There was a bomb sitting right here, and now I can't seem to find it..."

"I've got something for them zombies alright!"

DryadDryad

"I sell what I want! If you don't like it, too bad."

"Why do you have to be so confrontational during a time like this?"

"I don't want you to buy my stuff. I want you to want to buy my stuff, ok?"

"Dude, is it just me or is there like a million zombies out tonight?"

GolferGolfer

"The blood stains on my club? Have you seen the zombies outside?!"

"I don't know what's scarier, a Blood Moon or my sister during a Blood Moon!"

GuideGuide

"You can tell a Blood Moon is out when the sky turns red. There is something about it that causes monsters to swarm."

"Hey, buddy, do you know where any deathweed is? Oh, no reason; just wondering, is all."

"If you were to look up, you'd see that the moon is red right now."

MechanicMechanic

"All I want is for the switch to make the... What?!"

"Oh, let me guess. Didn't buy enough wire. Idiot."

"Just-could you just... Please? Ok? Ok. Ugh."

"I don't appreciate the way you're looking at me. I am WORKING right now."

MerchantMerchant

"Have you seen Chith...Shith.. Chat... The big eye?"

"Hey, this house is secure, right? Right? <Name of player>?"

"Not even a Blood Moon can stop capitalism. Let's do some business."

"Keep your eye on the prize, buy a lens!"

"Oh, great. I can hear <name of Mechanic> and <name of Nurse> arguing from here." (if the respective NPCs are present)

NurseNurse

When the player is not moderately injured (≥66% health):

  • "What is that supposed to mean?!"
  • "I don't think I like your tone."
  • "Why are you even here? If you aren't bleeding, you don't need to be here. Get out."
  • "WHAT?!"

When the player is moderately injured (<66% health):

  • "You better not get blood on me."
  • "Hurry up and stop bleeding."
  • "If you're going to die, do it outside."
PrincessPrincess

"The rivers are running red, everyone seem awfully on edge, hmm... it's a trying night, indeed!"

SteampunkerSteampunker

"I'm feeling a bit peevish as of late, so enough with your palaver you ragamuffin!"

StylistStylist

"Tipping IS optional, but remember I have access to scissors and your head."

"This is a cut-throat razor by the way."

"You better stay outta my hair tonight, hun. I just sharpened my scissors, and I'm looking for an excuse to use them!"

TavernkeepTavernkeep

"You know, where I'm from, a Blood Moon is actually just an excuse to get some fresh air."

ZoologistZoologist(transformed)

"Grrr!! Away. Stay. NOW!"

"Rawgh! Roo! Danger. Me. Wraaaath!"

Effects

Blood Moon (moon).png
The moon's appearance during a Blood Moon.
Red rain during a Blood Moon.

Enemies

  • The spawn rate of enemies on the surface increases. Not only do they spawn faster, but more are spawned than can normally exist on-screen at once.
    • This works no matter the environment, so for example Corruption and Crimson enemies can swarm more than they normally would.
    • It only affects spawn rates above the surface. Spawn rates below the surface remain the same.[2]
  • Enemies can spawn near towns, even though those normally suppress enemy spawns.
  • Zombies and their counterparts become able to open Doors.
  • Goldfish, Bunnies, and Penguins turn into Corrupt Goldfish, Corrupt Bunnies and Corrupt Penguins in Corruption worlds, or Vicious Goldfish, Vicious Bunnies and Vicious Penguins in Crimson worlds.
    • Those spawned from Statues will also become Corrupt/Vicious, and do not revert to their regular forms after the Blood Moon is over. If it is raining during the event, transformed Goldfish will flop around on the ground, instead of walking.

Visual effects

  • A red filter will be applied to the screen, shifting the colors of all entities and light towards red and purple shades. Some of the unique effects of this filter are listed below:
    • The filter will also alter the projectile colors of many weapons.
    • Placed Living Cursed Fire Blocks turn yellow, creating a unique effect.
    • The Glowing Mushroom Biome, which is normally blue, will appear pink-purple because of the red shader.
  • Almost all water will turn red, including rain.

Other effects

Achievements

Achievement Bloodbath.png
Bloodbath • “Survive a blood moon, a nocturnal event where the rivers run red and monsters swarm aplenty.”
Survive your first Blood Moon. (Desktop, Console and Mobile versions)
Category: Explorer Explorer

Notes

  • The Blood Moon's effects on enemy spawn rates stack with that of the Water Candle and Battle Potion.
  • In a multiplayer game, using the time adjustment server commands (dawn, noon, dusk, midnight) will not trigger the Blood Moon check, and so using "dusk" repeatedly does not force a Blood Moon to occur.
  • If a player chooses to, they can cancel a Blood Moon by summoning the Pumpkin Moon or Frost Moon.
  • A Blood Moon can happen in the middle of a Pirate Invasion. The invasion will continue until it ends, then the Blood Moon starts.
  • Blood Moons occur more often than Solar Eclipses, as Solar Eclipses have a 1/20 (5%) chance to happen each day (when the criteria are met).
  • If a Blood Moon and Full Moon coincide, Werewolves will spawn with increased frequency, instead of Zombies. Other spawns will not be affected.
  • Even if underground, Blood Moons can still override the spawn-reducing effects of NPCs.
  • Similar to the Solar Eclipse, a Blood Moon will increase the spawn rate of Truffle Worms during Hardmode.

Tips

For more elaborate strategies on defeating Blood Moon, including weapon and arena recommendations, see Guide:Blood Moon Strategies.
  • Placing a block in front of a door will prevent Zombies from being able to open the door.
  • If the player sees the notification that a Blood Moon is rising and they are under-equipped to defeat it, they should get underground as quickly as possible. Simply going indoors will not save them, nor will standing around outside. The Blood Moon gives enemies dangerous abilities, and there will be much more of them.
  • Although the Blood Moon is typically treated as a deadly event, it is possible to take advantage of the event, farm enemies for coins and loot once the player has max health and good weapons and armor. By then, the new enemies will not be serious threats, especially if the player has prepared their base.
  • The Blood Moon is a great time to use weapons that inflict damaging debuffs such as On Fire!, Frostburn and Poisoned in pre-Hardmode, and Cursed Inferno, Frostbite, and Acid Venom in Hardmode. They do significant damage over time and enemies will swarm towards the player, which forces them to dodge a lot more than in regular gameplay and makes these debuffs much more useful.

Trivia

  • In real life, the moon appears red during a lunar eclipse, which is sometimes referred to as a "Blood Moon". As sunlight passes into the shadow through the atmosphere, the moon is given a red/orange color due to the amount of air the light passes through.
    • This is the same phenomenon that gives sunsets and sunrises their colors.
  • When a real Blood Moon occurred on April 14, 2014, a warning was jokingly announced on the official Terraria forums.[3]
  • During a Blood Moon, all female NPCs except the Party Girl and the Princess have more irritable or aggressive dialogue than normal.
    • This is a reference to the fact that some women in real life become irritable or aggressive due to premenstrual syndrome.
    • The menstrual cycle and the real-world Moon cycle both have a duration of approximately 28 days.
    • Female player characters are not subject to such changes - all dialogue between the player and NPCs is normal for Blood Moons, and the player is not implied through the NPCs to appear more irritable.

History

  • Desktop 1.1: The chance of a Blood Moon was decreased to 1/9 from its previous chance of 1/7.

References

  1. ↑ Information taken from the Desktop version Desktop 1.4.4.9 source code, method UpdateTime_StartNight() in Terraria.Main.cs.
  2. ↑ Information taken from the Desktop version Desktop 1.4.0.5 source code, method SpawnNPC() in Terraria.NPC.cs. There may be inaccuracies, as the current Desktop version Desktop version is 1.4.4.9.
  3. ↑ www.terrariaonline.com → Forums → News → Dev Blog → thread: The Blood Moon is Rising...
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