Board Thread:General Discussion/@comment-3967802-20131024044838/@comment-24197468-20140920010351

RainbowSpaklez wrote: Okay, I keep reading about how the Hallow is like the Crimson/Corruption, but the Crimson and Corruption are BAD things. So I'm totally wondering: Is the Hallow bad? Because rainbows, unicorns, and pixies make the Hallow sound like a REALLY fantastic place. Okay, so maybe unicorns and pixies are enemies in this game, but that's totally stupid. Unicorns are awesome! So anyway, can anyone answer my question? Thanks! :) Actually the hallow is a good thing, well sort of. The dryad only requires the corruption to be cleased, and doesn't care if your world has went completely hallowed.

I think that a gap from 3 blocks should block the spread of corruption/hallow as well as background, but I come to the thoughts that vines growing from the ceiling can spread it as well. I dug a tunnel out around my house so it can stay in the purity since i don't like having giant worms and shooting flying slimes around my spawnpoint. My hellavator is about 20 blocks inside a cave (also part of my protection tunnel) and some way the ceiling kept hallowing the bottom, until i blocked it off with a single row of wood. So since i dug a tunnel of 3 blocks high with a wooden ceiling it still keeps the corruption spreading into my purity area.

There are also justs few blocks that can be corrupted/hallowed. Any type of brick cant be changed, even the stone bricks (still weired since the the normal stone CAN be affected).