20 Unfixed Duplication Glitches in Minecraft: A Complete Guide

Discover the top 20 unfixed Minecraft duplication glitches that are still working in 2025 for version 1.21 and beyond. This guide provides step-by-step instructions for duplicating everything from diamonds and Netherite to rails and Shulker boxes. Tired of the endless grind for rare resources? Gain a massive advantage in your survival world or realm by learning these simple yet powerful exploits for both Java and Bedrock editions, and start building your resources faster than ever before. At GameApp4U, we’ve tested these methods to help you enhance your gameplay efficiently.

Instantly Multiply Your Most Valuable Resources

Why spend hours mining when you can have an infinite supply of the game’s most coveted items in minutes? This section covers the most sought-after duplication glitches for precious materials. These methods are perfect for ambitious builds or securing an edge in your survival world.

The Ultimate Diamond and Netherite Duplication Glitch

For many players, obtaining diamonds and Netherite is the ultimate goal. A popular method on Bedrock Edition involves a specific setup with a chest and carefully timed game closures.

How to do it (Bedrock):

1. Place a chest on the ground.
2. Save and quit your world. It’s crucial to create a backup of your world before attempting this to prevent any potential loss of items.
3. Re-enter your world, place the diamonds or Netherite you wish to duplicate into the chest.
4. Walk a short distance away and wait for about 8-12 seconds to allow the game to save the chest’s contents.
5. Force close the game without saving (Alt+F4 on PC, or closing the application from the console dashboard).
6. When you reload the world, the items should be in both your inventory and the chest, effectively doubling them.

Unlimited Shulker Box Duplication for Mass Storage

Duplicating Shulker boxes filled with items is one of the most efficient ways to multiply resources. A working duplication glitch for Minecraft Bedrock involves using a portal and a villager to create a state where the game duplicates items dropped in the Nether. This method can be complex but is incredibly powerful for duplicating entire inventories at once. Another method involves a creeper explosion timed with breaking a chest containing the Shulker box.

Gravity Block Duplication: Sand, Gravel, and Dragon Eggs

Gravity blocks like sand, gravel, concrete powder, and even the rare Dragon Egg can be duplicated using mechanics that exploit how the game handles these falling blocks. A common design on Bedrock Edition uses an End Gateway.

How to do it (Bedrock End Gateway Method):

1. Locate an End Gateway.
2. Build a simple Redstone machine with a sticky piston next to the portal.
3. Place the gravity block you want to duplicate (e.g., sand or a Dragon Egg) on the piston.
4. Activate a Redstone clock that causes the piston to rapidly push and pull the block at the edge of the portal.
5. The game will generate duplicated blocks on the other side of the gateway, which you can then collect.

A simpler method for Bedrock involves placing gravity blocks on top of Big Dripleaves that have been locked in place with a lever; saving and quitting will often duplicate the items.

TNT Duplication for Automated Farms and Mining

TNT duplication is a game-changer for large-scale farms and automated mining operations. This glitch is most reliable on the Java Edition and typically involves a machine that uses a dead coral fan, slime blocks, and a detector rail to trick the game into creating endless primed TNT without consuming the original block.

Java TNT Duper Machine:

1. Construct a flying machine arm using slime blocks and a sticky piston.
2. Place a TNT block, a dead coral fan next to it, and a detector rail with a minecart on top.
3. When activated, the machine moves and the detector rail ignites the TNT, but the dead coral fan causes the original TNT block to remain, ready to be duplicated again.

Game-Breaking Glitches for Infinite Emeralds and XP

Emeralds and experience points (XP) are vital for trading and enchanting. These glitches provide an endless supply, removing the need for traditional farming.

Infinite Trading with Villagers Glitch

Certain exploits can cause a villager’s trades to never lock, allowing for infinite exchanges. While many of these are patched quickly, some methods involving server desynchronization or specific timing on Realms can still work, providing a steady stream of emeralds and enchanted books.

String Duplication for Endless Emeralds

By converting duplicated string into wool and trading it with Shepherd villagers, you can create a nearly infinite source of emeralds. The string itself can be duplicated using various all-item duplication methods, making this a highly effective two-step process for wealth generation.

Tripwire Hook Duplication for Easy Emerald Farming

Tripwire hooks are another valuable trade item, especially with Fletcher villagers. Machines similar to TNT duplicators can be built to duplicate tripwire hooks. These often involve pistons and slime blocks that exploit the game’s update order, creating a constant supply of hooks to trade for emeralds.

XP Duplication Glitches for Instant Enchanting

XP duplication glitches often involve exploiting furnaces or other block mechanics. One known Bedrock glitch involves using a furnace and timing a save-and-quit action. Another method involves a zero-tick kelp farm, which not only duplicates the kelp but also generates massive amounts of XP when the dried kelp is removed from the furnace. These glitches allow you to reach high levels instantly for all your enchanting needs.

Simple Duplication Glitches for Everyday Items

Not every glitch is about rare resources. These simple exploits help you stock up on common but essential items for building and exploration.

Rail Duplication for Large-Scale Transportation

Building extensive railway networks requires a vast number of rails. Rail duplicators, which often work on the same principles as TNT dupers in Java Edition, use slime block contraptions to create an infinite supply of any type of rail, including powered rails.

Carpet Duplication for an Infinite Fuel Source

Carpets are a surprisingly efficient fuel source, and duplicating them is remarkably easy. On both Java and Bedrock, a simple machine using a sticky piston, slime blocks, and an observer can duplicate carpets at an incredible rate. This provides an infinite fuel source for all your smelting needs.

How to Duplicate Banners, Torches and more

Many simple items can be duplicated using the “all-item” glitches. The bundle duplication method is particularly effective for this. By placing items like banners or torches inside a bundle and using a machine with two hoppers and pistons, you can trick the game into duplicating the bundle and its contents.

The All-Item Duplication Glitch

Several methods exist that can duplicate almost any item in the game. A popular one on Bedrock Edition requires a chest, a body of water, and precise timing.

How to do it (Bedrock):

1. Place a chest underwater.
2. Save and quit, then re-enter the world.
3. Place the items you want to duplicate in the chest.
4. Stay in the water until you start taking drowning damage, then force close the game.
5. Upon reloading, the items should be both in your inventory and in the chest.

Advanced Glitches for Experienced Players

These glitches are often more complex, requiring a deeper understanding of game mechanics like chunk borders and server behavior. They are powerful but come with higher risks.

The End Portal Duplication Glitch

This advanced technique uses the End portal itself to duplicate gravity blocks like sand or concrete powder. By building a Redstone contraption that pushes blocks into the portal at a specific timing, players can generate thousands of blocks per hour.

Chunk Border Duplication Glitch

This is one of the most powerful but riskiest types of duplication. It exploits how the game saves data as you move between chunk borders, especially when your simulation distance is set to four chunks. By building contraptions that operate across two chunks and timing a save-and-quit action, you can duplicate entire rows of blocks. This is often used for Shulker boxes or other valuable blocks.

Server and Realm Specific Duplication Glitches

Minecraft Realms and multiplayer servers have unique behaviors that can be exploited. Some glitches only work due to the specific way a server handles player data and latency. One such method involves placing items in a crafting table, force-quitting the game, and rejoining to find the items both in your inventory and still in the crafting grid. These are often patched, so staying current with the community is key.

Piston and Slime Block Duplication Machines

Many of the most effective duplication glitches rely on Redstone machines built with pistons and slime blocks. These machines exploit game mechanics by pushing and pulling blocks in a way that the game fails to correctly track the item’s state, leading to duplication. Designs for duplicating regenerating blocks, TNT, and rails all fall into this category.

Essential Tips and Precautions

While duplication glitches offer significant advantages, they come with risks. Following these best practices will help you exploit the game safely.

How to Perform These Glitches Safely Without Corrupting Your World

The single most important rule is to always back up your world before attempting any glitch. World corruption is a real risk, especially with glitches that involve force-quitting or manipulating chunk data. By creating a copy of your world, you ensure that you can always revert to a safe version if something goes wrong.

Bedrock vs. Java: Which Glitches Work on Your Platform?

It’s crucial to know that glitches are rarely universal. A glitch that works on Java Edition will likely not work on Bedrock Edition (MCPE, Xbox, PlayStation, Nintendo Switch, PC), and vice versa. Java glitches often rely on specific Redstone mechanics like quasi-connectivity and TNT duplication, while many Bedrock glitches exploit save/load mechanics and portal interactions. Always verify that a glitch is intended for your specific version of the game.

Best Practices for Duplicating on Servers and Realms

Before using any duplication glitch on a multiplayer server or a Realm, check the server rules. Many server owners forbid exploits, and using them can result in a ban. If glitches are allowed, perform them away from other players to avoid causing lag or interference. Glitches that involve crashing the server will affect all players and should be avoided.

What to Do if a Glitch Gets Patched

Glitches are, by nature, unintended features, and Mojang actively works to patch them with each update. If a glitch you rely on gets fixed, the best course of action is to search for new working duplication glitches. The Minecraft community is always discovering new exploits. Keep an eye on YouTubers and forums dedicated to the technical side of Minecraft to stay up-to-date on the latest methods for version 1.21 and beyond.

With these 20 unfixed duplication glitches, you now have the power to revolutionize your Minecraft experience. From obtaining infinite diamonds to setting up automated farms with duplicated TNT, these exploits offer a significant advantage. The world of Minecraft glitches is always evolving, but this complete guide provides a powerful toolkit for any player looking to bypass the grind. Always remember to back up your world before attempting any glitch. Now go forth, duplicate to your heart’s content, and build the Minecraft world of your dreams with unlimited resources at your disposal.