In the sandbox action-adventure video game Terraria, the Crimson is a biome that can spread to other biomes. This can be beneficial for players who want to farm Crimson-exclusive items or who want to create a Crimson-themed world. There are a few different ways to spread the Crimson, and the best way will vary depending on the player’s individual circumstances.
One of the most common ways to spread the Crimson is to use Crimson Seeds. These seeds can be purchased from the Dryad NPC, and they can be planted in any biome. Once planted, the seeds will grow into Crimson Altars, which will convert nearby blocks to Crimson. Crimson Altars can also be created by killing Bosses in the Crimson biome.