Can Corruption Spread Through Altars?
The spread of Corruption, one of the two corrosive biomes in the world of Terraria, has always been a topic of concern for players. Specifically, can Corruption spread through Demonic Altars, or in other words, do destroyed altars randomly spread the Corruption across the game map? This article delves into the various facets of Corruption spreading, answers some frequently asked questions, and provides guidance for those eager to navigate this peculiar mechanic.
Overview of Corruption Spread
Before diving into the meat of the article, let’s briefly understand the overview of Corruption spread in Terraria. Corruption, which starts in the underground Crimson Highlands biome, spreads horizontally to surrounding blocks at a variable rate. Factors that can accelerate or decelerate Corruption spread include destroying Ebonstone blocks, exposing certain areas, or finding powerful Corruption-related items. One of the ways players have been questioning Corruption’s spread is through destroyed Demon Altars, the infamous and powerful relics hidden deep within the Crimson biome. Let’s dive in!
Can Corruption Spread through Demon Altars?
As mentioned in the Overview, when you destroy a Demon Altar, a 2/3 (66.67%) chance is triggered for one randomly selected Stone Block in the Cavern layer to become converted to either Ebonstone or Pearlstone (if you defeat Plantera, the conversion chance changes, but the conversion outcome remains the same). Here are some essential takeaways regarding Corruption spreading through Altars:
• Each destruction of an altar offers a 66.67% chance of corrupting one random Stone Block, but not a 2/3 chance to instantly corrupt a single specific Block (emphasis added). A "randomly selected Stone Block" does not indicate the exact Block in mind but rather indicates any non-specific Stone Block can turn corrupted.
• Infernal Eyes: Note that Infernal Eyes’ buff effect is directly associated with Corruption. Consuming one will reduce Corruption by a set percentage and conversely increase Ebonstone production. Consuming four eyes will also unlock Corruption Immunity. Use the buffs strategically, or better still, acquire four Infernal Eyes early in the game!
Table: Demon Altars - Corruption Chance| Number of Destroyed Demon Altars | Probability (out of 100%) of Corruption |
|---|---|
| 0 | N/A |
| 1 | 66.67% (approximately) |
For reference, destroying only 1 Demon Altar sets a 66.67% chance to randomly infect the Cavern layer (excluding any hardrock-based constructions).
• Beware of increased spread probability when exploring Plantera-dropped terrain after this phase. Ebonstone/Walls now act like infectious vectors spreading the corruption as they destroy any unaffected terrain. Your risk, so be vigilant about new territory!
To visualize better: think of your chance at corrupting each newly encountered Stone Block during subsequent discoveries. Here is another take on understanding probability; remember, "two chances of getting struck (approximately)** is less, yes" than expected because more are in fact expected.
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