When I activate hard mode, will my world be destroyed?

I'm getting to the point where I am about to fight the Wall of Flesh. When I activate hard mode will I have to worry about the corruption destroying my chests and builds? Will the corruption spread and eat up my builds?

terraria

Best Answer

Upon defeating the Wall of Flesh a Corruption/Crimson and Hallow biome will generate in a large V, with each "edge" being either the evil or Hallow. The Terraria wiki states that

The Underground Corruption and Underground Crimson primarily replace Stone Blocks, Ice Blocks, Sand and Silt Blocks on their path with their respective evil versions immediately upon conversion.

The position in the world that the new biomes will generate is dependant on the seed.

Your chests and builds, assuming they are not made of those blocks, are safe.

In terms of spreading both new biomes will begin to spread much faster and more aggressively so could reach your spawn and base given enough time. Check out this article for making sure your world isn't overrun by new biomes.

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What happens when you enter Hardmode in Terraria?

A world permanently converts to Hardmode after the Wall of Flesh boss is defeated for the first time. Hardmode grants players new challenges and gives them much more content to explore. Hardmode adds two new biomes to the world that will appear and function upon converting: The Hallow and the Underground Hallow.

How do you survive in Hardmode?

The first thing to do in Hardmode is to go to the natural Corruption/Crimson Biome and start smashing Altars.

When smashing one altar, the world will be blessed with Cobalt or Palladium Ore;

Smashing another one will make Mythril or Orichalcum Ore appear;

Smashing a third one will make Adamantite or. Titanium Ore appear.

What do you do in Hardmode?

You'll see walking Shadow armour, bigger wandering eyes, and wayyyy more enemies. And the biomes will wreck you unless you get good armour, and quick. Molten armour may be the strongest pre-hardmode armour set but it's pathetic in Hardmode. And no,there is no wiring that can tell you when Hardmode begins.

Top 3 Things to do When You Enter Hardmode! Terraria

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Images: Lukas, Anna Tarazevich, Anete Lusina, Anete Lusina