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Altars

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The item(s) described on this page exist as functional game items, but are only naturally generated and cannot be collected.
Demon Altar
  • Demon Altar item sprite
Statistics
  • Hammer icon.png 80% (only in Hardmode)
Type
Sounds
Crimson Altar
  • Crimson Altar item sprite
Statistics
  • Hammer icon.png 80% (only in Hardmode)
Type
Sounds
This article is about the crafting station. For the altar located in the Jungle Temple, see Lihzahrd Altar.
A world after smashing a large number of Crimson Altars leaving the Crimson and Hallow to spread.

Demon Altars and Crimson Altars are naturally-occurring crafting stations found mainly in and around chasms in The Corruption or The Crimson, and less frequently underground. They are used to craft pre-Hardmode boss-summoning items and the Night's Edge as well as the Void Bag and Vault. Altars emit some light, making them easy to spot. They cannot be freed, picked up, placed, or crafted.

After a world enters Hardmode, they can be destroyed with Hardmode-tier hammers, but attempting to hit them with a hammer before Hardmode or a hammer with less than 80% hammer power causes the player to lose half their health and will leave the altar unaffected.

Crafting[edit | edit source]

Used to craft[edit | edit source]

Hardmode[edit | edit source]

After the Wall of Flesh has been defeated in a world, altars can be destroyed with anything that has a hammer power of at least 80% (typically the Pwnhammer). Each destroyed altar will spawn a Wraith and causes one type of Hardmode ore to appear in the world, with the appropriate status message displaying in the chat: "Your world has been blessed with <name of ore>!"

  1. First altar: Cobalt OreCobalt Ore or Palladium OrePalladium Ore, chosen randomly.
  2. Second altar: Mythril OreMythril Ore or Orichalcum OreOrichalcum Ore, chosen randomly.
  3. Third altar: Adamantite OreAdamantite Ore or Titanium OreTitanium Ore, chosen randomly.

Players will be able to find these new ores scattered across the Underground layer to near-Underworld levels, with them replacing most blocks created during world generation. They will spawn at random locations in varying quantity, in places explored and unexplored alike.

  • Destroying more altars will never spawn Hardmode ore types beyond the three that were randomly assigned to the world during the initial round of destroyed altars. A world with Palladium Ore deposits will never spawn Cobalt Ore deposits, or vice versa. (Except for the Drunk World seed.)
  • Which ores are generated is not determined until the first, second or third altar is smashed. For example, it is not determined if the world has Cobalt or Palladium until the first altar has been smashed. The same goes for Mythril/Orichalcum with the second altar, and Adamantite/Titanium for the third.
  • Subsequent altars destroyed will begin the cycle again, though the fourth to sixth altars will drop half as much ore as the first ones, the seventh to ninth will drop only one third of the ore of the first ones, and so forth. So, the nth cycle will only generate one-nth as much ore as the first one. For example, destroying the 19th altar would yield one-seventh of Cobalt/Palladium Ore compared to the first altar. Destroying 12 altars will roughly double the ore provided by the first three; tripling that original allotment would require destroying 33 altars (if a world spawns that many).
  • No matter how many altars are destroyed, ore rarity remains set with Cobalt/Palladium being the most common, followed by Mythril/Orichalcum, then Adamantite/Titanium as the rarest.
  • Each time an altar is destroyed, one or two Wraiths spawn, regardless of the time of day.
  • Each time an altar is destroyed, there is a 66% chance that a single random Stone Block in the Cavern layer will be converted to Ebonstone/Crimstone or Pearlstone, facilitating the spread of Underground Hallow or Corruption/Crimson. No block other than the selected one will be converted initially.
  • Additionally, smashing an altar will allow mechanical bosses to spawn naturally (if said boss has not been defeated before it will spawn with a 10% chance each night), and random Pirate Invasions (if all the criteria are met).

Notes[edit | edit source]

A Demon Altar that spawned in a Crimson world.
  • Altars can be destroyed through other phenomena, such as being spawned on top of sand, or being struck by a meteorite landing. Altars being destroyed this way prior to Hardmode will have no effect.
  • Altars encountered outside of the Corruption/Crimson on a given map will always be found at a depth of around 8 feet or above. This can be seen at the Ocean floor, where altars can sometimes be found.
  • Even in pre-Hardmode by using block swap you can replace the ebonstone block underneath the altar without breaking it.
  • In worlds with the corruption, demon altars spawn more frequently than crimson altars in crimson worlds.

Achievement[edit | edit source]

Achievement Begone, Evil!.png
Begone, Evil! • "Smash a demon or crimson altar with a powerful, holy hammer."
Smash a demon or crimson altar, using the Pwnhammer. Desktop, Console, and Mobile Versions

Tips[edit | edit source]

  • Altars emit a faint glow, making them somewhat easier to find in unlit areas.
  • It is not uncommon to find an altar relatively close to the world spawn point. Wherever the player has set up their base, it is recommended to begin searching near 0 depth, and upon finding an altar, build a room around it so the player can craft in relative peace.
  • Players about to enter Hardmode may benefit by mining paths to several known altars beforehand, as navigating Hardmode Corruption/Crimson is dangerous at first.
  • Altars are needed for crafting certain items, hence destroying every altar in a world is not recommended.
  • It is not strictly necessary to smash an altar; all ores obtained by doing so can also be obtained by fishing up crates, allowing access to all ores and their counterparts in one world.
  • When destroying multiple altars in rapid succession, the resulting Wraith swarm may become difficult to deal with. Therefore, it is not recommended to smash another if the Wraiths are not defeated.

Trivia[edit | edit source]

  • The difficulty that new players often face in identifying and determining the nature of Demon Altars, often resulting in forum posts asking about "purple spiky things", has become a notable social phenomenon in the Terraria community. A title message references this with the text Terraria: What's that purple spiked thing?
  • In some rare cases an altar can spawn atop another altar. Hammering it in pre-Hardmode will deal damage and cause both altars to break.
    • Destroying the lower one in Hardmode will destroy both, with the full effects of destroying two regular altars.
  • In some rare cases an altar can spawn on top of a Crystal Heart. Both lower quarters of the heart can be collected as two separate items, but the top half stays unbroken under the altar. The remaining half still exhibits its normal animation after the bottom half is broken.

History[edit | edit source]

  • Desktop 1.4.0.2: Fixed a bug where Demon Altars would spawn on rare configurations of adjacent Cacti, resulting in the world crashing if the Demon Altars were hit.
  • Desktop 1.2.3.1: Fixed the problem with altars/pots/chests spawning in bugged conditions.
  • Desktop 1.2.3:
    • Fixed Demon Altar mining death having no message.
    • Crimson Altar hover text now appears on the map.
  • Desktop 1.2: Worlds which have the Crimson instead of the Corruption will have Demon Altars replaced with Crimson Altars.
  • Desktop 1.1:
    • When smashed with a Pwnhammer during Hardmode, a vein of Hardmode Ore will generate in the world.
    • Now has a chance to summon a few Wraiths and create an additional Underground Corruption or Hallow spreading point somewhere in the world when smashed.
  • Console 1.02: Worlds which have the Crimson instead of the Corruption will have Demon Altars replaced with Crimson Altars.
  • Mobile 1.2.6508: Worlds which have the Crimson instead of the Corruption will have Demon Altars replaced with Crimson Altars.
  • Mobile 1.1.5536:
    • When smashed with a Pwnhammer during Hardmode, a vein of Hardmode Ore will be generated in the world.
    • Now has a chance to summon a few Wraiths and create an additional Underground Corruption or Hallow spreading point somewhere in the world when smashed.

References[edit | edit source]