Background walls



Walls are tiles that create backgrounds. Most wall types are items that can exist in player inventories, and can be placed by players in any area that doesn't already have background walls. Walls placed by players prevent enemies from spawning, and a mostly unbroken background of placed wall tiles is necessary for a structure to qualify as a House for attracting NPCs, or to place a Bed that can set a player's spawn point. Walls can be removed with a Hammer.

Walls can be found naturally in several Biomes. Naturally occurring walls will not stop enemies from spawning, and cannot be utilized for Houses. They must be torn down and placed manually in order for a House to occupy the space. All naturally occurring walls must be removed by starting from their edge (i.e., there must be at least one adjacent tile with no wall), unlike player-placed walls, which can be removed from any point. Explosives can remove all natural walls within their blast radius as long as an edge is somewhere within the radius.

Walls are generally obtained via crafting, purchasing from NPCs, or by harvesting naturally-occurring walls. One item of crafting material generally crafts four of its corresponding Wall items. As of version 1.2, four of the same Wall item can also be crafted back into one of the item it was made from.

[[File:Hive Wall.png]] Naturally Occurring Walls
These walls are spawned when the new world is created, and can all be obtained by some method.

Obsidian Back Wall.png Unobtainable Walls
These walls are spawned when the world is created but are unable to be created, obtained, looted, purchased, or used by the player in any way*. They can be destroyed, but drop nothing (with one exception).
 * Unobtainable walls can be utilized with third-party map editors such as TEdit.

Rainbow_Wallpaper.png Purchased Walls
These walls are purchased from various NPCs.

Hallowed Grass Wall.png Converted Walls
These walls are mainly created when the Corruption, Crimson, or Hallow naturally spreads to them, but they can also be made by using the respective Solution with the Clentaminator. When destroyed, these walls do not drop anything. This technically makes them unobtainable.

Wooden Wall.png Crafted Walls
These walls are made by the player using various crafting materials.

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