How to duplicate items in Terraria 1.4

Written 26th Sep 2020 by GameGator

How to duplicate items in Terraria 1.4 Thumbnail

With the release of Terraria 1.4, there’s so much new content that some people don’t even know where to start. Because of this, many players end up looking for new duplication glitches to make the game easier.

Something new that was added is Journey Mode, which is sort of a creative mode where you can duplicate any item indefinitely. This guide will show you how to use duplication in Journey Mode, as well as explain the easiest duplication glitches to do in any mode.

How to duplicate in Journey Mode

Journey Mode is a new game type that’s completely separate from the others. To start Journey Mode, you need to create a new Journey character and start a Journey world. You can only play on those worlds with Journey characters, making it impossible to transfer duped Journey items onto a normal map.

Once you’ve loaded into your Journey world, you’re already ready to start duplicating. When you open your inventory, you’ll notice a little rabbit icon underneath it, which opens your power menu. The power menu is a collection of all your “creative mode” powers.

The little gear in the power menu is called the Research section, which allows you to put any item into it to research. When the research requirements are fulfilled, you can access that item from the creative menu and duplicate as many as you want.

Every item will have different amounts needed to research. Consumables typically need 100 items, whereas accessories and weapons only need 1.

Server duplication glitch

The classic server duplication glitch isn't unique to just Terraria. It involves exploiting a server and autosave to duplicate any items you loaded in with. This won’t work if you’re the host of the server, unless you’re hosting the server via TShock or other methods.

To do this, make sure that you have all the items you want to dupe in your inventory. Load into the server and quickly find a nearby container, or have a friend help you out. Remove the item and place it into a container or give it to your friend, and then force close the game.

This can be done by using ALT + F4 or task manager, and both work equally well. The server dupe method works on console as well, so it’s not limited to the PC version. It also isn’t expected to change anytime soon, so enjoy getting all the items you want.

Boulder glitch

If you’re by yourself or don’t have a server set up, the next best thing is the boulder dupe glitch. This may or may not be patched in coming updates, so definitely try out the above method before you do this one.

For this one to work, you need to be hosting a multiplayer game. It doesn’t work in singleplayer, so be sure that multiplayer is on. You’ll need the following items for this glitch:

  • Wood blocks
  • Boulders
  • 2 Doors
  • 2 Tables
  • 1 Sand Block
  • Bars to dupe
How to duplicate in Terraria Screenshot 1

Start off the glitch by creating this little structure.

Then, climb up next to where the table is and break the door. If it’s been done correctly, the table should break and the sand should fall to the ground.

The next step is to place another table onto the blocks you’re standing on, and then place a boulder onto the table. On top of the boulder, place the bars or chests you want to duplicate. Opening and closing the door will cause items to be duped each time you click. Here’s what the finished product should look like:

How to duplicate in Terraria Screenshot 2


Now that you know how to duplicate items, be sure you use your new powers wisely. Definitely don’t do this in a server where you can be banned, and only do it for worlds you or your friends own. There are many more glitches than these, but these are some of the easiest ones you can do.