.WLD File Extension
File Type 1Terraria World File
This file is saved in a binary format, which requires a specific program to read its contents.
What is a WLD file?
Game file used by Terraria, a 2D action adventure and sandbox construction game; saves a world, which contains terrain, water, monsters, items, and other objects; used for single or multiplayer gameplay and can be loaded by the Terraria dedicated server, which allows players to host Terraria worlds over a network.
World files may be a pre-installed game map, or they may be a custom map created by the user. WLD files are saved to the following directory in Windows: [user]\Documents\My Games\Terraria\Worlds\.
WLD files can be edited using the Terraria Map Editor (TEdit). They can be viewed without the Terraria game using MoreTerra (Terraria World Viewer).
File Type 2ESRI World File
.WLD File Association 2
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.
File Type 3SMBX World File
.WLD File Association 3
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.