Talk:The Crimson/@comment-6259189-20131005154005/@comment-1250011-20131006053844

It doesn't spread "over" snow, but it will overtake snow biomes. It turns ice blocks into Red Ice Blocks. It spreads MUCH faster than Corruption. Within 5-10 minutes of entering hard mode, it overtook almost an entire snow biome in my small world. Over 100 blocks.