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For the method to duplicate items and blocks, see Tutorials/Block and item duplication.
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This article documents an April Fools' joke. 
This feature was exclusively part of a joke version and is not currently planned for addition to regular Minecraft.
It is documented here on the wiki due to being officially-released content by Mojang Studios, even if not present in a final version.
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This feature is exclusive to Java Edition. 

minecraft:dupe_hack is a joke item from Java Edition 23w13a_or_b.

Obtaining[]

Once the dupe_hack_occurrence_chance vote is approved the dupe hack item has a random chance of dropping whenever an entity with chests is killed by a player, e.g. when destroying a minecart with chest with a sword.

It doesn't appear in the creative menu, not even when the option "Operator Items Tab" is enabled, but can be given to the player with /give and other commands.

Usage[]

The dupe hack item can be used to create a limited amount of duplicate items by placing it on a crafting table with any other item. It has a random chance of breaking, controlled by the dupe_hack_break_chance vote. This limitation can be mostly bypassed by putting the items in an ender chest first and duplicating the chest.

When using the Dupe Hack, it has a random chance of breaking, which is often decided by votes.

Crafting ingredient[]

Ingredients Crafting recipe Description
Any Item +
Dupe Hack
The dupe hack item remains in the crafting grid after duplicating an item.

Data values[]

ID[]

Java Edition:

NameIdentifierFormTranslation key
minecraft:dupe_hackdupe_hackItemitem.minecraft.dupe_hack

History[]

Java Edition
23w13a_or_bMissing Texture JE4 Added minecraft:dupe_hack.


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