Demon Altar

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Demon Altar
Demon Altar.png
Max Life 2 hits to destroy with Pwnhammer

Crimson Altar.png

Demon Altars are naturally-occurring crafting stations found mainly in and around Chasms in The Corruption, caves in The Crimson (called Crimson Altars), and more rarely in other areas Underground. They are used to craft boss-summoning items and the Night's Edge. 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, but attempting to hit them with a hammer before that causes the player to lose half their health, and the Altar will not be affected. Whether the Altar is purple or red depends on whether it is a corruption or crimson world.

Eight Corruption Demon Altars.
A world after smashing a large number of Demon Altars leaving the Crimson and Hallow to spread.


After the Wall of Flesh has been defeated in a world, Altars can be destroyed with the Pwnhammer or any superior hammer. Each destroyed Altar causes one type of Hardmode ore to appear in the world, with the appropriate message displaying in the player's chat: "Your world has been blessed with (ore)". If a player attempts to destroy the altar with a lesser hammer, or in a world in which the Wall of Flesh is not yet defeated, the altar will be unaffected and the player will lose half their current health, as stated above.

Smashing Altars always results in Cobalt (Palladium), then Mythril (Orichalcum), then Adamantite (Titanium) ore being generated in respective order. The Altar resets the sequence after Adamantite/Titanium, and continues to cause additional Hardmode ore deposits, thus increasing the distribution of the Hardmode ores with each successive time the player smashes an Altar. Each time an Altar is destroyed, 1-3 Wraiths spawn, regardless of the time of day. When destroying multiple Altars in rapid succession, the resulting Wraith swarm may become difficult to deal with.

Which ores are generated is not determined until you smash an Altar. For example, it is not determined which ore your 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. But once the first three altars are destroyed, the sequence is permanently set. If you get Palladium, Mythril, and Titanium, with your first three altars, your world will always produce those and only those when altars are destroyed.

In addition to spawning new ore, a small patch of Corruption or Crimson will be spawned at a random location on the map. Smashing a large number of Demon Altars will often result in a chaotic world splotched with corrupted/crimson and hallowed areas underground.

Additionally, smashing an altar will start spawning mechanical bosses randomly at night, and will start to trigger Pirate Invasions. If you do not smash an Altar, none of these will happen.


Used to craft[edit]


Demon Altar / Crimson Altar

Result Ingredients
Night's Edge.png Night's Edge Light's Bane.png Light's Bane
Blade of Grass.png Blade of Grass
Muramasa.png Muramasa
Fiery Greatsword.png Fiery Greatsword
Night's Edge.png Night's Edge Blood Butcherer.png Blood Butcherer
Blade of Grass.png Blade of Grass
Muramasa.png Muramasa
Fiery Greatsword.png Fiery Greatsword
Suspicious Looking Eye.png Suspicious Looking Eye Lens.png Lens (6)
Worm Food.png Worm Food Rotten Chunk.png Rotten Chunk (15)
Vile Powder.png Vile Powder (30)
Bloody Spine.png Bloody Spine Vertebrae.png Vertebrae (15)
Slime Crown.png Slime Crown Gold Crown.png Gold Crown
Gel.png Gel (99)
Slime Crown.png Slime Crown Platinum Crown.png Platinum Crown
Gel.png Gel (99)
Abeemination.png Abeemination (Console only.png) Honey Block.png Honey Block (5)
Crispy Honey Block.png Crispy Honey Block (3)
Stinger.png Stinger
Hive.png Hive (5)
Obsidian.png Obsidian (2)
Bottled Honey.png Bottled Honey

Hardmode ore spawns[edit]

A Crimson Altar in the snow.


  • Altars are not used to craft hardmode boss summoners.
  • Altars cannot be collected as items.
  • Altars generate less and less new ores as more are destroyed. The second set of altars create 1/2 as much ore as the first set, the 3rd set creates 1/3 as much as the first, and so on.
  • Cobalt(Palladium) is roughly twice as common as Adamantite(Titanium), with Mythril(Orichalcum) halfway between.
  • Each time an Altar is destroyed, there is a 66% chance that a single random tile in the rock layer will be converted. Only stone blocks can be converted, and they will be converted to ebonstone, crimstone or pearlstone. This will grow to become a new underground Hallow, Crimson or Corruption if given enough time.
  • For players that dislike the thought of a random block in the world turning to ebonstone, crimstone or pearlstone, try breaking Altars in an other world, of course, you would have to have killed the Wall of Flesh.
  • Altars encountered outside of the Corruption/Crimson on a given map will always be found at a depth of around zero feet.
  • Attempting to destroy an Altar with a Pwnhammer before killing the Wall of Flesh will hurt you just like a regular hammer.
A Demon Altar hovering in midair.
Bug.png Bug 1.1: If a Demon Altar is on top of sand, then by digging the blocks below the sand, the Altar will disappear.
Bug.png Bug Demon Altars have a chance of spawning in the air in the Underground Corruption.
Bug.png Bug If a Demon Altar is in the air, placing a block under it and breaking the block will destroy the Demon Altar.
A Demon Altar cut in half.
Bug.png Bug Demon Altars can also spawn on top of each other in the Underground Corruption.
Bug.png Bug : Sometimes, Hardmode-ores may be generated without a Demon Altar being broken (a similar bug occurs when killing the Wall of Flesh, and may be related or the same).
Bug.png Bug : Rarely in mobile version, Demon Altars can be covered with blocks and removing the block, cause the disappearance of the altar. (Needs to be tested in in PC).
Bug.png Bug : Rarely a demon altar will spawn on a pot, allowing the pot to be broken multiple times. The pot may vanish randomly, causing all demon altars above the pot to vanish as well.
Bug.png Bug : Mobile only.png Console only.png Demon Altars have a tendency to spawn at the bottom of an ocean. (Confirmed only on Mobile and Console version).
Bug.png Bug : Mobile only.png Sometimes, if you fight the Eater of Worlds during hardmode, ores will spawn randomly during the fight as if you broke a demon altar.


  • Players about to enter Hardmode may benefit by mining paths to several known Altars beforehand, as navigating Hardmode Corruption/Crimson is dangerous at first.
  • If you destroy every Altar in a world, it then becomes impossible to use them for crafting (at least within that world). Leaving one that's easily accessible in your world might be wise, there is usually one in the nearest cave from spawn at underground level. Alternatively, you can also create a new world and use Altars there for crafting.
  • Players should not destroy all the altars just for ore as the amount of ore spawned reduces for every 3 destroyed altars, as well as spawning a tile of Corruption, Crimson, or Hallow, making the world chaotic, as stated above.


  • Fixed the problem with altars/pots/chests spawning in bugged conditions.
  • 1.2.3: Fixed dying by demon altar having no message. Crimson Altar now shows up when you hover over it on the map.
  • 1.2: Worlds which have the Crimson instead of the Corruption will have Demon Altars replaced with Crimson Altars.
  • 1.1: When smashed with a Pwnhammer or a Drax during Hardmode, either Cobalt, Mythril, or Adamantite will be spawned in the world. Also, it now has a chance to summon a few wraiths and create additional Underground Corruption or Hallow spreading point somewhere in the world when smashed.
  • Pre-Release: Introduced.
Furniture: Iron Anvil.png Crafting Stations • Candle.png Light Sources • Chest.png Storage Items

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