In hardmode, the world’s Corruption, Crimson, and Hallow biomes all start to expand outwards. Rapidly. Here’s how to deal with the evil biomes.
As soon as you enter Hardmode in Terraria, the world’s Corruption, Crimson, and the new Hallow biome all start to expand outwards. Rapidly. If left to their own devices, these biomes will eventually swallow your entire world, destroying your NPC villages and making life generally difficult.
Thankfully, there are a variety of different ways you can remove Corruption, Crimson, and Hallow from your Hardmode world. This guide covers everything you can do to prepare for Hardmode’s evil biome spreading, and what you can do in the endgame to remove it entirely.
Containing Corruption And Crimson Before Hardmode Starts
This method is completely time-consuming but is also probably the most effective way to prevent Crimson and Corruption from eventually ruining your world. It involves digging holes. Very big holes.
- The system is simple: dig tunnels that entirely encase your Corruption or Crimson biomes before you defeat the Wall of Flesh.
You need to dig a surrounding tunnel that is at least 4 blocks wide, although we recommend going for 6, just in case. Imagine you’re drawing a circle around your Corruption or Crimson biome. This trench will prevent the affected blocks from spreading past it.
How To Dig As Quickly As Possible In pre-Hardmode
Obviously, your world is still in pre-Hardmode, which means you don’t have access to some of the best mining equipment in the game. No super pickaxes, no drills, and no mega-buffs for mining.
There are still some things you can use to make this process as smooth and as quick as possible. These are:
- Mining Potions – These increase mining speed by 25 percent. Crafted with Antlion Mandibles and Blinkroot (and Bottled Water) at a Placed Bottle. Here’s a handy list of all potions in the game.
- Slice of Cake – This buff food item is sold by the Party Girl NPC and will also increase mining speed.
- Ancient Chisel – This accessory is found in Sandstone Chests, or in Oasis and Mirage Crates. It will increase your mining speed by 25 percent.
- Deathbringer, Nightmare Pickaxe, Molten Pickaxe (at least) – You want the best Pickaxe possible pre-Hardmode to make this possible. Check out our list of the best pickaxes and swords in the game.
If you don’t want to protect your entire world, you can ignore the Corruption or Crimson biomes and just dig a surrounding tunnel around your main base. This will stop your central hub of chests, NPCs, and various other utilities, from becoming overrun by evil biome mobs.
There is also the option that you carry out this job while Hardmode is already active. This means you’ll have access to better mining items that can speed up the process.
- Watch out though: make sure you’re very quick with the tunnels, otherwise, you’ll be chasing the Evil biome across your world as it spreads.
Here are a few other general tips for helping with this method.
- Sunflowers can be used to prevent the spread of Corruption and Crimson in the early game, although they are less effective when the biomes begin to spread Underground
- Hallow and Crimson or Corruption will generate in a V-shape once Hardmode is initiated, this means it can cut right through your tunnels which can be a nightmare to deal with.
- Every Altar you smash (which spawns more Hardmode ores) will also increase the speed of Evil biome spreading. Be careful!
How To Remove Corruption, Crimson, And Hallow From Your World
If you don’t dig tunnels in preparation for Hardmode, you might realize that your world is quickly becoming overrun with one of the three Evil biomes.
- These corrupted biomes spread particularly quickly through soft blocks, like snow, and mud.
As a result, the Jungle biome can very quickly become completely overrun, removing the biome from your world. Here’s a short guide on how to remove Evil biomes when they’ve spread too far.
The Steampunker and the Clentanimator
The Clentanimator is a useful tool sold by the Steampunker in Hardmode, though she has to be living in a Jungle biome home. Come prepared, though, it’s one of the most expensive items in the game.
This tool can be used to both create and destroy biomes. For the purposes of this guide, we’ll show you how to use it to completely remove Corruption, Crimson, and Hallowed from your world.
You will need:
- The Steampunker NPC
- The Clentanimator tool
- Green Solution, also sold by the Steampunker
- A stack of coins
Green Solution is the ammo you put inside the Clentanimator. When fired it replaces the Evil biome with whatever tile was underneath originally (referred to as “Purity.”) Careful, though, this solution will also transform your Jungle into a Glowing Mushroom biome.
- The Clentanimator has a range of 60 tiles and is extremely satisfying to use.
One problem is that it’s quite hard to get rid of absolutely all of the Evil biomes. The best way to try and get rid of all of it (and finally satisfy the Dryad) is to dig a series of vertical tunnels and fire the Clentanimator side to side all the way down. This way you should be able to cover a good portion of the affected area.
NEXT: Terraria: 10 Tips For Master Mode
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