Terraria Wiki: The Complete Guide to Everything Terrarian

A character placing walls in a house. Backgrounds, also know as “walls,” are tiles that create backgrounds on top of biome categories and can be found abundantly throughout the game’s different environments – from Underground Journeys to Final Fantasy-style darkness filled with monsters! Walls have been around since Terraria’s beginning but did not receive much attention until Update 23 when they were given more functionality than ever before including removal methods for those who don’t enjoy their presence or if there is no reason behind them being present (ex: underground).

Some types of walls can be placed in the player’s inventory and then re-placed to any empty location. The different mechanics for these items depend on which category they fall into:
Breakable Wall – These are not too difficult, but will break if entities jump over it or cause immense damage with attacks. They have a chance at being grabbed by other monsters when walking close enough while grabbing another creature may cause them both significant harm so long as there is nothing blocking their path (you cannot grab someone through blocks). This would happen most often against enemies like Bullet Loungers who love standing just outside reach waiting until prey gets near enough before leaping onto them.

Bug net terraria

  • Safe walls prevent enemies from spawning (but do not do anything to prevent their passage), and a mostly unbroken background of safe walls is necessary for a structure to qualify as a NPC house, or to use a Bed to change a player’s spawn point. Safe walls are usually obtained from crafting, or purchased from NPCs, but can also be found naturally in certain structures, such as Shrines and Pyramids.
  • Unsafe walls are a type of wall that appears during world generation, and can generally not be utilized by the player; when broken, they will either drop their safe equivalent or nothing at all. Unsafe walls will not stop enemies from spawning, and cannot be utilized for houses. They also have a quirk in that they must be removed by starting from their edge (i.e., adjacent space with no wall), which for explosives means that an edge must exist somewhere within the radius of the explosion.

Differing safe walls from unsafe walls can be tricky because many walls, such as Obsidian Brick Walls or Dungeon Brick Walls, exist in both safe and unsafe forms. With these walls (both of which are harvestable), the player must break the unsafe walls and replace them in order for them to count as safe walls. Similarly, many (or all, on ) naturally-generated walls have safe counterparts which are obtainable through crafting or purchase from NPCs.

TypesCrafted walls

This table requires JavaScript to be enabled and site tooltips to be turned on. The walls are made by the player using various crafting materials, all of which qualify for housing!

Purchased walls

These walls are purchased from various NPCs. All bought-and-paid for ones qualify as housing, but not all of them can be found in your average home interior decorating magazine or blog post!

Harvested walls

These walls can be harvested in various places when exploring the world. Most of them are also obtained through crafting and all qualify for housing!

Converted walls

A player’s home is typically surrounded by biomes that they have spread, but it can also come in other forms. The Clentaminator and the Desktop version of Minecraft alike allow players to spray Solution onto these walls for quick construction opportunities on any types of terrain- even if you’re not standing right there!
When creating your own house or designing an area where homes will be placed exclusive from nature itself (such as underwater!), we recommend using Mushroom Walls instead so no one mistakes them with natural ones when building next door.

[link]Click/tap here to reveal this content. (there may be a slight delay)[/link] This table requires JavaScript to be enabled and site tooltips to be turned on to be naponewsonline.org can also view the data on another page.


The backdrop of the Underground and Cavern layers is a non-removable biome background which does not consist of wall tiles.
  • Dirt Walls generally completely cover the background at Underground depths above zero (see Layer, Depth Meter). Placing new walls in this area would require first tearing down the existing walls starting from the top (the Surface) or the bottom (zero depth), which can be an arduous task. Alternatively, the existing walls can be destroyed using explosives.
  • At depths below zero, the backdrop of the map is generally no longer covered with actual wall tiles, though this can be difficult to differentiate visually since the biome background at these depths can have a similar appearance. Walls can be placed freely here by players.
  • Torches and several other furniture items can be placed directly on background walls without requiring blocks below them.
  • Most walls have no coin value, even if they were crafted from rare materials. Stained glass and wallpaper bought from the Painter are exceptions.
  • Walls appear to have their own placement layer.

See also

  • Wall IDs
  • Blocks


  • Desktop Made several wall types craftable that were previously unobtainable through the use of Ecto Mist.
  • Desktop 1.3.1: Most wall inventory sprites updated. Which ones were not are currently unknown.
  • Desktop
    • Living leaf walls are valid for housing
  • Desktop Fixed walls not framing properly in camera mode snapshots.
  • Desktop
    • Bug fixed: The Blue Slab Wall is now valid for housing if placed by a player.
    • Added Honeyfall, Granite, Smooth Granite, Marble, Smooth Marble, Chlorophyte Brick, Shroomite Plating, Martian Conduit, Luminite Brick, Meteorite Brick, and Crimtane Brick walls.
    • Many naturally generated walls have a new appearance.
    • Now you can place walls in front of each other.
  • Desktop
    • The Sail now costs 50 instead of being free.
    • A bug affecting the appearance of placed Tin Plating Walls (view) has been fixed.
  • Desktop 1.2.4:
    • Adding walls made from Gemspark Blocks, Palm Wood, Boreal Wood, 1.2.3-Heavy Work Bench-products, and Glass+Confetti.
    • The Pirate now sells the Sail.
    • Two natural cave walls (7 and 8) have been added. Gemstone Cave- and Moss Cave-walls have received an overhaul.
    • The Metal Fence has been split into Lead and Iron variants.
    • The Lavafall Wall and Waterfall Wall are now crafted like most other walls.
    • Painted walls show up properly on the map.
  • Desktop 1.2.3: Adding Dynasty Walls, Lavafall Wall, Waterfall Wall, even more Wallpaper, and the Portable Cement Mixer for even heftier wall placing.
  • Desktop 1.2.2: Ten new holiday-themed wall types called Wallpaper can now be purchased from the Painter.
  • Desktop 1.2.1: Fixed an issue causing walls to not have different frames. Pumpkin Wall, Hay Wall, and Spooky Wood Wall added.
  • Desktop
    • Lihzahrd Wall added.
    • You can now craft living wood walls.
    • Snow particles will no longer spawn on backwalls.
  • Desktop 1.2:
    • Torches can now be placed directly onto walls.
    • Each brick wall now has its own unique texture.
    • Several new wall types added.
  • Desktop 1.1.1: Added Snow Brick Wall, Candy Cane Wall, Green Candy Cane Wall
  • Desktop 1.1: Added Glass Wall, Planked Wall, Mythril Brick Wall, Cobalt Brick Wall, Mudstone Brick Wall, Iridescent Brick Wall and Pearlstone Brick Wall.
  • Desktop Walls that are automatically placed to fill small gaps are now correctly taken from the player’s Inventory.
  • Desktop 1.0.6: When placing background walls, one-block holes are now automatically filled in.


At the end of every game session, it is important to make sure you’ve saved your progress. This will allow for future gameplay with no loss in items or money spent at merchants. You can do this by pressing ESC and clicking on “Save & Exit Game Session” from the menu that appears. If you need assistance discussing what to save before quitting, feel free to contact us! We are happy to help answer any questions about our services and how we might be able to improve your gaming experience through Terraria Wiki.