Torches

A Torch is a furniture item that produces light when placed, held, or dropped ( key), and is crucial at all stages of gameplay as a primary light source. Torches provide light permanently, and are never consumed. Regular torches can be found randomly in Chests and Pots, as a bonus drop from Slimes, or purchased from the Merchant for each. They can also be purchased from the Skeleton Merchant for, during the second half of every in game minute.

Torches can be placed on the sides or tops of most blocks, and can be placed on background walls. They can also be placed on the sides of trees and Wooden Beams. In the PC version they can be placed on any type of Platform. A placed Torch can be retrieved by right-clicking on it or by freeing it with a Pickaxe or Drill. When the block a Torch is attached to is broken, the Torch will attach itself to any other block or wall directly adjacent to it. If all adjacent blocks surrounding a Torch are removed (left, right, and bottom), and no wall exists behind it, it drops like any other item.

Torches are also mechanisms that can be toggled on and off via Wire.

Torch
Standard Torches produce an orange flame, and cannot be placed in liquids. They are crafted with Wood and Gel, but can also be purchased from the Merchant or the Skeleton Merchant for each.

Colored Torches
Purple, Yellow, Blue, Green, Red, White and Orange Torches can be made by combining standard Torches with Gems. There are eight available colors, one for each of the seven Gem colors, plus the Pink Torch crafted as a regular torch but with Pink Gel. With the exception of their colors and light levels, these function identically to a standard Torch.

Ice Torch
Ice Torches are crafted by combining standard torches with Ice Blocks, and give off a pale blue light. The Ice Torch has a slightly different graphic to the rest of the colored torches, and can be used to make Frostburn Arrows.

Demon Torch
Demon Torches can be crafted by combining standard torches with Obsidian. They can also be taken from the Ruined Houses in the Underworld, where they occur naturally. They function identically to standard, colored and Ice Torches, except that they cycle smoothly between red, purple, and blue flame colors.

Cursed and Ichor Torches
These Torches become available during Hardmode, and emit a bright green or yellow light, respectively. They are unique in that they can be held or placed in liquids and still function normally there. They are crafted by combining standard Torches with Cursed Flames (Corruption only) or Ichor (Crimson only).

Ultrabright Torch
Ultrabright Torches cannot be crafted, but sometimes they are sold by Traveling Merchant. They shine brighter than normal torches when held.

Bone Torch
Bone Torches are sold by the Skeleton Merchant during the first half of every in-game minute (a real-world second), the time when he is not selling ordinary Torches.

Trivia

 * Orange Torches were apparently added because of a "really persistent nagging brit" in reference to Youtuber ChippyGaming AKA James Bennett.
 * If you tab out of the game window, while the game itself is paused, the torch animation still plays
 * If you place a block above a torch, the torch will lower. If there is no block above it, the torch gets higher. This can be seen best using a trapdoor and opening/closing it,

History
Torche 횃불 Pochodnia Torch Факел