Living Fire Blocks are craftable Hardmode furniture blocks that, when placed, resemble small animated flames and emit a faint light. They deal no damage on contact, and can be broken with any pickaxe. The Calamity Mod currently adds three types of Living Fire Blocks to the game, each corresponding to the types of fire found in the mod.
Similarly to all other Living Fire Blocks, they can be placed in a manner similar to traditional blocks, but as furniture items rather than foreground blocks. They can attach to each other horizontally and vertically, and will connect to walls and adjacent blocks. Like other furniture objects, Living Fire Blocks have no collision, allowing the player to walk directly through them.