Opening a WLD File

The WLD file type is primarily associated with Terraria.

WLD	File extension: WLD
	File type:	map

What is a WLD file?

WLD files mostly belong to Terraria by 505. A WLD file is the map of a virtual world in Settlers II city-building video game. WLD is also the filename extension of a map, a resource, and a world used in Terraria, Star Wars: Battlefront, and Serious Sam video games respectively. The Guild II: Renaissance saves a player's progress and game state in a WLD file. Professional Farmer: Cattle and Crops uses modification packages saved in WLD files. ArcGIS geographic information system uses a WLD file to save a world map. WLD is also the filename extension of a program created with SIMATIC STEP 7 PLC programming environment.

How to open a WLD file

You need a suitable software like Terraria to open a WLD file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your WLD file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a WLD file directly in the browser:. Just drag the file onto this browser window and drop it.

Online WLD Text Viewer

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Programs that open and convert WLD files:

Terraria by 505
See the previous paragraphs to learn more about the main application. WLD files are often referred to as Terraria games because this type of file is primarily created or used by this software.
Acrobat Distiller (data) by Adobe
Acrobat Distiller is a cross-platform desktop application for converting PostScript documents to Portable Document Format (PDF). It uses some data saved in a WLD file. This file format is classified as Data.
ArcGIS (world map) by ESRI
ArcGIS is a geographic information system for visualizing location, navigation, and geographical data. It saves a world in a WLD file. A world contains one or two pairs of coordinates for control points in a drawing (usually a map). This file format is classified as GIS. Related links: About World Files
Professional Farmer: Cattle and Crops (modification package) by Masterbrain Bytes
Professional Farmer: Cattle and Crops is a commercial farming simulation video game. It saves a modification package in a WLD file. This file format is classified as Game.
REND386 (world) by Dave Stampe and Bernie Roehl
REND386 is a discontinued open source program for creating and exploring virtual worlds. It saves a virtual world in a WLD file. This file format is classified as Game.
Serious Sam (world) by Croteam
Serious Sam is a first-person shooter video game series. The player assumes the role of Sam, a mercenary who attempts to stop an extraterrestrial overlord from destroying humanity. Worlds used in this game are saved in WLD files. This file format is classified as Game. Related links: Seriously! Fan Site
Settlers II (world map) by Ubisoft Blue Byte
Settlers II is a city-building video game for PCs and game consoles. It uses a world map saved in a WLD file. This file format is classified as Game. Related links: Settlers II Information Site
SIMATIC STEP 7 (program) by Siemens
SIMATIC STEP 7 is a development environment used to program and configure SIMATIC and other types of programmable logic controllers. It uses a WLD file to save a program written for VIPA's System 200V's 215-2BE06 CPU. This file is loaded onto System 200V through a memory card. This file format is classified as Developer.
Star Wars: Battlefront (resource) by Lucasfilm
Star Wars: Battlefront is a first-/third-person shooter video game series for Xbox, PlayStation, and Windows. It uses a resource saved in a WLD file. This file format is classified as Game. Related links: LucasArts Wikipedia Page
Super Mario Bros. X (world) by Super Mario Bros. X Developers
Super Mario Bros. X is a fan-made edition of Super Mario video game. It uses a world saved in a WLD file. This file format is classified as Game.
The Guild II: Renaissance (game saved state) by THQ Nordic
The Guild II: Renaissance is a real-time strategy video game set in Europe. User-created and auto-generated game saves in The Guild II: Renaissance are saved in WLD files. This file format is classified as Game.

WLD file extension format:

The file format, which is the arrangement and type of data in a file, determines which program can open the file. The file format can be deduced from the file extension and the signature. However, different programs can use the same file extension, and file extensions can be assigned incorrectly. Exact knowledge of the format is therefore important in order to solve problems occurring in files. Our evaluation of the WLD files is as follows:

The WLD file type is a very commonly used file extension and is used by a few programs, each with its own file format. The following file formats are most commonly found in WLD files:

45% of all WLD files have the same signature 00 00 00 72 65 6C 6F 67 69 63 02. These are binary files, so they do not contain words or text. A typical file size is 6 MB. It is a modern file type. Several words can almost always be found in the files, e.g. relogic. Files like these are about world, builders, workshop, builder, classic, journey and items.
5% of all WLD files start with the bytes LAND.MAN crucial for this file format. The content consists of illegible binary data, which can only be read and interpreted by the associated programs. WLD files can be up to 12 MB in size, but are often around 32 KB - 7 MB. Several words can almost always be found in the files, e.g. LAND.MAN. Examples of file names are log_in.wld or login.wld. These files are often associated with school.

All other WLD files (50%) have different formats, frequently e.g. Settlers II map and BUIV. Often described as prog, autosave or valley. If you want to find out which format your WLD file belongs to, just click on the button "Choose your .wld file to analyze".

Technical Data for WLD File Extension

File classification:

Game

Related files:

wld0, bak2, bak, twld, wdl, wli, world, sen, zip, wrd, dly, png, plr, lvl, map, txt, jpg

Mime type:

application/octet-stream, text/plain

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: WorldBuilder.Document, FileType: WorldBuilder Document, AppName: 3DSTATE Webmaker (including WorldBuilder)
EXEFile: Maker.exe

ProgramID: wldfile
EXEFile: %ProgramFiles%\LucasArts\Yoda\Yodesk.EXE %1

ProgramID: SeriousEditor.Document
EXEFile: %ProgramFiles%\Croteam\SERIOU~1\Bin\SERIOU~2.EXE

a wld map is a special file format by 505 and should only be edited and saved with the appropriate software.

How to solve problems with WLD files

Associate the WLD file extension with the correct application.
Update your software that should actually open maps. Because only the current version supports the latest WLD file format. Search, therefore, e.g. on the 505 manufacturer website after an available Terraria update.
To make sure that your WLD file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
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