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Volpedia/Games/Terraria/Progression/World Evil Spread
TERRARIA / PROGRESSION / GENERAL

World Evil Spread

Corruption, Crimson and Hallow can transform terrain.

Volpedia editorial referenceReviewed 2026-10-27Reference page · not indexed
Original thematic Volpedia diagram, not an in-game character or gameplay screenshotOriginal Volpedia editorial art
OverviewCharacters18Weapons27Maps20Modes6Bosses18Classes4Events12Crafting15Items20Progression14Guides19Tips18Tools1
Practical tip: Protect vital base zones and Jungle corridors as a priority, then manage spread over time.
OverviewHow it worksHow to use itMistakes to avoidRelated
01

Overview

Corruption, Crimson and Hallow can transform terrain.

02

How it works

Biome conversion accelerates at Hardmode transition and varies with world conditions.

03

How to use it

Protect vital base zones and Jungle corridors as a priority, then manage spread over time.

04

Mistakes to avoid

Do not dig an enormous trench without checking how biome conversion actually spreads.

RELATED ON VOLPEDIA

Explore the next topic.

General / Game systemHardmode Transition

Defeating Wall of Flesh changes the world permanently.

General / Game systemHousing Validity

NPCs need suitable homes before they can move into the world.

General / Game systemPre-Hardmode

World stage before defeating Wall of Flesh.

General / In-depth walkthroughSecret Seeds and Skyblock

Explore custom world creation while keeping special seed hazards separate from normal progression.

General / In-depth walkthroughSummoning Every Major Boss

Learn how Terraria bosses enter the world, where fights must happen and why they matter.

General / In-depth walkthroughWall of Flesh and Hardmode Preparation

Prepare the Underworld arena and your world before the irreversible Hardmode transition.

Back to Progression
IN THIS GUIDEOverviewHow it worksHow to use itMistakes to avoidRelated topics
OTHER SECTIONSCharactersWeaponsMapsModesBossesClassesEventsCraftingItemsGuides
Content is original and carefully versioned. No external research links are displayed.

Independent Volpedia guide, not affiliated with Re-Logic or 505 Games. Schematic category graphics are original illustrations, not game screenshots or enemy sprites; the approved Volpedia cover and existing original Boss Atlas art are retained. Information was reviewed October 27, 2026 against the 1.4.5 update cycle; precise balance, drops, availability and platform details may vary. Sources are recorded privately in the editorial registry.

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