A collection is a saved copy of a server’s mod list, in its load order. Save one on this server, then use it on another Terraria server to get the same mods without adding each one again.
Collections are for tModLoader servers. A Terraria collection works on another Terraria server only, not on a server for a different game.
Save the list
- Open the Mods page.
- Open the Collections tab.
- Find the card Keep this list of (count) mods as a collection.
- Type a Name. Add a Description (optional) if you like.
- Under Who can use it, choose Your organization or Everyone.
- Choose Save collection.

The panel says “Saved (name).”
Private or public
- Your organization. Only your organization sees it.
- Everyone. Every panel user with a server of this game can find and use it. Only your organization can change or delete it.
Change your mind later with Make public or Make private on the collection.
Use a collection on another server
- Open the other Terraria server’s Mods page, then the Collections tab.
- Type in Search collections to find it.
- Choose Show the (count) mods if you want to see what is in it.
- Choose Add to my list or Replace my list.
- A box asks “Add (name) to this server’s list?” or “Replace this server’s list with (name)?”. It says how many mods are added and taken off.
- Confirm.
Add to my list keeps the mods already on the server and adds the collection’s. Replace my list takes the server’s mods off the list first, so only the collection’s remain.
Nothing changes on the server yet. The panel says: “The server changes only when you apply the list.” Open On this server and choose Apply (or Apply and restart) to download the mods. A running server stops, downloads and starts again, so it disconnects everyone who is on. Use Message everyone on the Players page to warn them first.
Delete a collection
Choose Delete on a collection you own. The panel warns: “Servers that used it keep their mods. The collection itself is gone for everyone.”
If it does not work
- The collection is not found. A private collection is seen only by its own organization. Ask the owner to Make public, or save your own.
- Nothing happened on the server. The collection only changes the list. Apply the list.
- A mod stays off after you apply. A mod that is missing a mod it needs, or made for a newer tModLoader, is left off and stays on the list, waiting. See the Mods page.
More about the game: Terraria servers.