Place the item(s) you want to dupe into a chest.Please understand this if the glitch does not work. Note: This glitch is old, and may not work for the newest versions of Terraria. Repeat with different items if you want.Both of you click 'loot' at the same time.One of you put the item in you want to dupe.Both of you find a chest and open it at the same time.These tactics effectively double the amount per-use This strategy is effective and it is singleplayer.

Go back to the original world and insert the duped items into the chest.Go into the backup copy of the world, and take the items out.Make a new world, and put the items you want to duplicate into a chest.There are now two, (or two sets) of the item(s) you duplicated. Player two will still have the items but the same items will still be in the chest. After the game has saved, have Player Two take the items out, and exit without saving.Have the item(s) you want to dupe in the chest.Have two players in the same world with a chest.This does not really use a glitch or a bug, but it was pretty effective. (Optional) Delete the character with the empty inventory.Exit the world then reenter with original character.Go back into the world and put items in a chest.Put anything you want to dupe in your inventory.Duping Fallen Stars is very useful for using the Star Cannon.Дuplication on Mobile Character Duplication Exploit Many players of Terraria do not support duplication when playing single player but will use it for PvP.Using any of these methods may rapidly make the game less enjoyable and can possibly corrupt the game if it is overused- use these methods at your own risk.Duplication (also known as duping)В is a process by which the player creates multiple copies of an item using an exploit or glitch.

Duplication terraria 1.3.4.4