Terraria Server World Size and Difficulty: Create or Change a World
World size and difficulty are chosen when a world is created. You cannot change size afterwards, so plan before you start.
Sizes
- Small: the quickest to explore and the lightest on the server. Good for few players.
- Medium: a balanced choice.
- Large: the most space and the biggest save file. Better for big groups and long playthroughs.
In serverconfig.txt, autocreate uses 1 for small, 2 for medium and 3 for large.
Difficulty
The difficulty setting uses 0 for classic, 1 for expert, 2 for master and 3 for journey. Journey mode adds power menus for items and the world, which are handy for creative servers. Expert and master change enemy strength and loot.
Create a new world
- Stop the server.
- Open serverconfig.txt in the Files tab.
- Set world to a new file name, autocreate to your size, worldname, difficulty and optionally seed.
- Start the server and wait for generation to finish. Bigger worlds take longer.
Use an existing world
Single-player worlds are .wld files stored on your PC in the Terraria Worlds folder. Upload the .wld file to the worlds folder on the server, and point world at it. Players then need to create new characters or use characters that match the world's rules, such as difficulty.
Things to know
- If world exists, autocreate and difficulty are ignored.
- Back up the .wld file, and the .wld.bak file if present, before major changes.
- Journey characters can only play in journey worlds, and other modes have their own rules.
- Updating Terraria can affect modded worlds, so back up first.
Contact us on Discord if world generation fails or the server will not load your file.