4.3 | 64 Votes
What is a WLD file?
A WLD file is a game world created by Re-Logic Terraria, a 2D action-adventure and sandbox construction game. It contains a record of the world's terrain, water, monsters, items, and other world objects. Players create and load WLD files from Terraria's Select World screen.
In Terraria, players explore a 2D open world. Players can create new or load existing worlds on Terraria's Select World screen. When a player creates a new world, they specify the world's name, seed, size, and game type. Terraria then saves the player's world in a WLD file.
The PC versions of Terraria store WLD files in the following directories:
- Windows: ~/Users/YourUserName/Documents/My Games/Terraria/Worlds
- Mac: ~/Users/YourUserName/Library/Application Support/Terraria/Worlds
Players can load WLD files when playing Terraria in single-player or multiplayer mode. For example, when a player hosts a multiplayer game, they can host that game using one of their existing WLD files (by selecting it from the Select World screen during the setup process).
NOTE: Terraria also saves backups of players' WLD files. These .BAK files use the .wld.bak extension and are saved in the same directory as WLD files.
How to open a WLD file
To use a WLD file with Re-Logic Terraria (Windows, Mac), place it in your ~/Terraria/Worlds directory (the full location of which is noted above). Then, the world your WLD file contains will appear on Terraria's Select World screen.
You can also open WLD files with various third-party Terraria map editors and viewers. For example, TEdit (Windows) allows players to edit the world a WLD file contains. TerraMap (Windows, Web) allows players to view a map of the world a WLD file contains.
Programs that open WLD files
ESRI World File
3.4 | 7 Votes
GIS file created in the ESRI World (WLD) format, which is an ASCII text format that specifies coordinate information for a raster image; stores six lines of data and includes the pixel size, rotation, and coordinate location.
NOTE: By knowing the pixel size, the coordinate of the upper-left pixel, and the rotation information of a raster image, the location of an aerial photo can be placed precisely on a map.
Programs that open or reference WLD files
SMBX World File
3.2 | 5 Votes
World file used by SMBX (Super Mario Bros. X), a fan-created clone of Super Mario Bros. for PC; saves the overhead map of a world, which includes paths to different playable levels (specified in .LVL files); can be customized using the Level Editor program included with SMBX.