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Terraria Wiki
This is a Guide page.
This is a Guide page.
This means the page will walk you through a specific task, strategy, or enemy/boss fight.
Status: Subject to revision (This Guide does not meet certain quality standards and may be heavily outdated.)
  • Issues:
     • Most likely outdated since 1.4. Remember not to delete pre-1.4 content; use {{eicons}} and {{eversions}}!
  • The event[]

    A Blood Moon is a common randomly occurring event that takes place over the course of an entire night; however, a Blood Moon can also be initiated when the player uses a Bloody Tear. Blood Moons are signaled by the Status message "The Blood Moon is rising..." in the lower left corner of the screen (or the top middle of the screen on Mobile version Mobile).

    A Blood Moon will only occur if at least one player in the world has more than 120 life, and only on nights when a moon is present (any night except a new moon). Given those criteria, a Blood Moon has a 11.11*1/9 (11.11%) chance of occurring. It will also not spawn if another event is currently taking place, such as Lantern Night or Slime Rain. Weather-related occurrences (like Windy Days or Thunderstorms) do not count as events, so there can be crossovers.


    While a Blood Moon is active, multiple effects can happen:

    This content is transcluded from Blood Moon § Effects.

    Red rain during a Blood Moon


    Sold items[]

    Other effects[]

    • Deathweed blooms. Blood moons (and Full Moons on PC version PC, Console version Console, Old-gen console version Old-gen console, Mobile version Mobile, Old Chinese version Old Chinese, tModLoader version tModLoader, and tModLoader 1.3-Legacy version tModLoader Legacy) are the only times you can harvest Deathweed Seeds from Deathweed (with the exception of harvesting with a Staff of Regrowth).
    • Most NPCs have their own unique lines commenting on the event.
    • The Zoologist NPC will transform into her werefox form regardless of the moon phase.
    • Fishing power is 1.1x stronger, and can provide some unique items and spawn unique enemies, including the Dreadnautilus.
    • Visual effects:
      • Almost all water will turn red, including Rain. Exception: The Ocean will not turn completely red, though it will be affected by the screen filter.
      • A red filter will be applied to the screen as well, shifting the colors of all entities and light towards red and purple shades.
      • This will also affect the projectile colors of many weapons.
      • Placed Living Cursed Fire Blocks turn yellow, making a unique effect.
      • The Glowing Mushroom Biome, which is normally blue, will have the red shader make it appear pink-purple.


    While a Blood Moon can be dangerous to new players, it can also wield great rewards.


    General tips[]

    This content is transcluded from Guide:Practical tips § Combat.


    Due to the NPCs being vulnerable to enemies during this event, it is recommended that you make your base in the sky at the beginning. If you have already made a base, a simple barricade of a block behind a door will prevent most enemies from getting in. You will want to move your base above ground level before Hardmode, as the increased enemy spawn rate will result in more WraithWraiths spawning, which can be a nuisance; however, they can only move upward if they're inside a block. A simple ditch can take care of most ground level mobs, even ClownClowns in hardmode. Even better, line the bottom of the ditch with lava and it will kill them for you. You will want to place a thin layer of lava in the ditch, enough to burn Copper CoinCopper Coins, but not Silver Coinsilver ones. To make sure that the amount of lava is correct, throw a copper coin in. If it burns, you have met the minimum requirement. If not, add more until it does, but slowly until the coin disappears. Next, throw a silver coin in. It shouldn't burn. If it does, remove some and try again. Repeat until the copper coin burns, but not the silver. As said above, traps can make the arena even deadlier when used correctly. Keep in mind that Dripplers can hover and fly above your defenses.

    Also, if you do not want to build an arena, you can use weapons that attack through blocks (for example, the Vilethorn pre-Hardmode, or a Crystal Vile Shard or Life Drain in hardmode) to attack mobs while being safe in your house. If you have defeated Plantera, you can use the Nettle Burst. You can do this by blocking your doors with blocks or having a base that is high off the ground, while using a weapon (like the ones suggested above) to attack the enemies that come. If you have a floating base, you can put a lava pit underneath your base as well.