Rarely, Corrupted Wood can generate hovering over the surface of some worlds.
Corrupted blocks are created on initial world generation. Under certain circumstances, natural materials such as Wood can be converted into their corrupted variants.
Four types of corrupted blocks are generated on world creation:
Super Excavators can be used to harvest half of removed Corrupted Blocks and Corrupted Water.
Corrupted variants of some blocks can be created by throwing Corrupt Bombs at them:
- Grass, turns into Corrupted Grass
- Ashenwood, turns into Corrupted Ashenwood
- Elderwood, turns into Corrupted Elderwood
- Wildwood, turns into Corrupted Wildwood, harvested as Corrupted Wood
- Autumnwood, turns into Corrupted Autumnwood, harvested as Corrupted Wood
- Parchwood, turns into Corrupted Parchwood, harvested as Corrupted Wood
- Shorewood, turns into Corrupted Shorewood, harvested as Corrupted Wood
- Weepwood, turns into Corrupted Weepwood, harvested as Corrupted Wood
- Ashenwood Leaves, turns into Corrupted Ashenwood Leaves
- Elderwood Leaves, turns into Corrupted Elderwood Leaves
- Wildwood Leaves, turns into Corrupted Wildwood Leaves, harvested as Corrupted Leaves
- Autumnwood Leaves, turns into Corrupted Autumnwood Leaves, harvested as Corrupted Leaves
- Parchwood Leaves, turns into Corrupted Parchwood Leaves, harvested as Corrupted Leaves
- Shorewood Leaves, turns into Corrupted Shorewood Leaves, harvested as Corrupted Leaves
- Weepwood Leaves, turns into Corrupted Weepwood Leaves, harvested as Corrupted Leaves
- Dark Wildwood Leaves, turns into Corrupted Leaves
note 2:. While some Wood and Leaf blocks may appear as their corrupted variants after being converted, harvesting them will turn them into standard Corrupted Wood and Corrupted Leaves, which can only be purified into Cragwood and Cragwood Leaves. To preserve the original Wood and Leaf types, the player may want to purify the corrupted blocks on the spot before harvesting.
note 3: Citrus Autumnwood Leaves, Cinnamon Autumnwood Leaves and Mocha Autumnwood Leaves all convert to Corrupted Autumnwood Leaves when corrupted, but can only be purified into Cinnamon Autumnwood Leaves (the red variant). When harvested, all variants revert to standard Corrupted Leaves, which can only be purified into Cragwood Leaves.
Corrupted Wood and Corrupted Leaves make for very good fuel, the second best after Food made with Tar (Tar Soup, Tar Bread and Tar Sandwiches). 2 blocks of Corrupted Wood and 4 blocks of Corrupted Leaves are used for each process in the Forge when used as fuel.
Corrupted Stone is an ingredient in a number of crafting recipes such as:
Corrupted Creatures and Diamond Treasure Chests can spawn on any type of Corrupted Blocks in darkness, regardless of time of day and altitude. The rare Silver Keepas and Golden Keepas appear to have the best spawn rates on Corrupted Blocks and blocks of the Lava layer.
Players can create farms for the higher tier Treasure Chests and Corrupted Creatures by building platforms made with Corrupted blocks at any altitude. Enclosing such platforms may assist with catching Keepas, and blocking out enough light will enable the farm to work even in the day.
Most light sources will reduce the available spawning space of such farms. However, blocks that are lit but do not emit light, such as LEDs, Wildwood Flowers and Glowing Mushrooms, will not prevent Corrupted Creatures from spawning.
Getting close enough to Corrupted Blocks or Corrupted Water will cause a purple corruption meter to show up in the UI above the health bar, similar to the heating and freezing meters. This corruption meter will fill while the player is within range (about 3 blocks) of corrupted blocks. The rate at which the meter fills is dependent on the number of nearby corrupted blocks. Direct contact with corrupted blocks is not required. When the corruption meter is completely filled, the player will be inflicted with the Corruption debuff and start to take damage over time.
If players touch Corrupted Water, they will immediately take damage over time, and are inflicted with a lingering 2 seconds of the Corruption debuff after leaving the Corrupted Water, regardless of how full the corruption-meter was.
Protection from Corruption
Corruption Resistance Potions can be used to prevent the corruption meter from filling for a few minutes.
If the player manages to distance themselves from Corrupted Blocks and Corrupted Water, the corruption meter will reduce over time. If the player is in a fairly open area, pillaring up with 3-4 uncorrupted blocks is sufficient.
Players can cause the corruption meter to decrease by placing and being close to a Healing Beacon, which will also purify blocks in a short range.
All Corrupted Blocks can be purified with Purification Bombs and Healing Beacons that will then transform them into their uncorrupted counterparts - common grey Stone, brown Dirt, Cragwood and Cragwood Leaves.
Super TNT will destroy Corrupted Blocks and Corrupted Water.
In some Early Access versions of the game, Corruption was able to spread from corrupted blocks into adjacent units of Water, turning whole Oceans into Corrupted Water. Corrupted variants of Wood, Dirt and Stone were easily converted when in contact with Corrupted Water.
Wood could be corrupted by placing any type of solid corrupted block adjacent to any natural block of Wood, so that the Corruption then could spread over a whole trunk of a tree or a building made from natural Wood blocks. This was disabled with update R43 on May 24th 2017.