.TWLD File Extension

tModLoader World Data

Developer The tModLoader Team
4.3  |  13 Votes

What is a TWLD file?

A TWLD file is a data file that modifies a Terraria world (.WLD file). It may contain modifications to the world's terrain, water, monsters, items, and other objects. The Terraria modding program tModLoader creates TWLD files when players create modded worlds.

More Information

TModLoader is a free add-on that allows players to install mods for Terraria, a 2D sandbox exploration game. After installing mods, players can use tModLoader to create modified Terraria worlds.

Unlike normal Terraria worlds', modified worlds' data is split across two files: a normal WLD file, which contains typical Terraria world data, and a TWLD file, which contains all the world modifications created by the player's installed mods. To load a modified world, you must possess both its WLD and TWLD file (and store them in the appropriate Terraria directory).

How to open a TWLD file

With tModLoader installed, you can load the world with which a TWLD file is associated. To do so, place the world's WLD and TWLD files in Terraria's Worlds directory. In Windows, you may find this directory at:

~/​YourUserName/​Documents/​My Games/​Terraria/​Worlds

Then, open Terraria and load your modded world.

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Programs that open or reference TWLD files


Verified by FileInfo.com

The FileInfo.com team has independently researched the tModLoader World Data file format and Mac, Windows, and Linux apps listed on this page. Our goal is 100% accuracy and we only publish information about file types that we have verified.

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