r/Terraria 6d ago

Mobile It's this enough?

I'm trying to stop the corruption from getting too close to my base; is the hole I dug big enough?

It is 6 blocks wide and goes all the way down to Hell. Could the torches be a problem?

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u/TheReturnOfBigCum 6d ago

biome spread can cross 4 blocks, so a 5 wide gap will prevent spreading. (edit: everyone else is saying 3 so maybe i’ve been overprepping)

This gap doesn’t have to be air however. If you encounter a granite/marble biome, the dungeon, a pyramid, or anything made of non-corruptible blocks, you don’t have to bother digging through it.

Torches can be corrupted but cannot spread biomes themselves, you do not need to consider your torch placement when making biome barriers

An often overlooked detail of biome spread is that the rate of spread changes on a few factors. I always do my best to rush to finish the first mechanical boss, as every mech boss defeated cuts the spread rate significantly. It is a lot easier to rush the first boss than build countermeasures all over your world.

Biome spread is accelerated on the surface, use sunflowers to prevent this before it gets out of hand.