Aeronautics Anti-Grief & Dupe Patch
Running a Minecraft server with the Create: Aeronautics mod opens up incredible possibilities for building moving contraptions and airships. However, that freedom can also introduce serious vulnerabilities. Malicious players can exploit physics interactions to duplicate rare items or tear apart the landscape. The Aeronautics Anti-Grief & Dupe Patch is a lightweight, server-side datapack designed to shut down these exploits without breaking the core experience. It specifically targets the simulated physics system, adding a protective layer that keeps your world safe.
Why You Need This Patch
Create: Aeronautics introduces simulated physics that can move entire structures. While this is amazing for building flying machines, it also opens the door to griefing. Without proper safeguards, a player could assemble a chunk of natural terrain—like a grass block—and drag it through a base, destroying everything in its path. Similarly, certain blocks like item drains and Copycats+ components can be abused to duplicate items endlessly when moved by the physics engine. The Aeronautics Anti-Grief & Dupe Patch directly addresses these issues by adding those problematic blocks to the simulated:non_movable tag, telling the mod to leave them behind during assembly.
What the Patch Protects Against
This datapack is a focused fix for two major exploit categories. First, it prevents terrain-grab griefing by marking natural surface blocks like grass_block as non-movable. That means a player cannot scoop up the ground beneath a base and weaponize it. Second, it blocks item duplication by blacklisting blocks known to cause dupes when assembled into a contraption. The current list includes item drains, mechanical drills, hand cranks, and specific Copycats+ pressure plates and buttons. By keeping these blocks out of the physics simulation, the patch eliminates the most common duplication methods without affecting legitimate Create: Aeronautics gameplay.
How to Install the Aeronautics Anti-Grief & Dupe Patch
Installation is straightforward and requires no client-side changes. First, ensure your server is running Minecraft 1.21.1 with NeoForge and the Create: Aeronautics mod. Then, download the Aeronautics Anti-Grief & Dupe Patch datapack .zip file. Place it directly into your world's datapacks folder, which is located inside the world save directory. After uploading, run /reload from the server console or as an operator, then verify the datapack is active with /datapack list. If you manage your server through the foxygame.net launcher, the patch is available in the add-on catalog for one-click installation and automatic updates, so you never have to worry about manual file transfers or version mismatches.
Customizing the Non-Movable Block List
Every server has unique needs, and the patch is designed to be easily edited. Open the datapack .zip and navigate to data/simulated/tags/block/non_movable.json. Inside, you will see a JSON array of block IDs. You can add any block that you want to exclude from the physics simulation—for example, if your server uses custom terrain blocks or you discover a new dupe method, simply append the block ID to the list. The "replace": false setting ensures that your additions merge with the mod's own non-movable tag rather than overwriting it, preserving essential machinery blocks. After editing, re-upload the datapack and run /reload again.
Layering Your Anti-Grief Strategy
While the Aeronautics Anti-Grief & Dupe Patch is a powerful tool, it works best as part of a broader server protection plan. The patch only stops contraptions from grabbing specific blocks; it does not prevent a player from building a ship out of allowed blocks and flying it into a base. For complete protection, pair this datapack with a claim mod like OPAC that restricts building and interaction within player claims. Also, consider that the Nether lacks grass blocks, so if you allow claims there, you may want to add minecraft:netherrack to the non-movable list to prevent terrain grabs in that dimension. Together, these layers create a robust defense against griefing.
Compatibility and Performance
The Aeronautics Anti-Grief & Dupe Patch is built specifically for Minecraft 1.21.1 and the NeoForge mod loader, matching the requirements of Create: Aeronautics Simulated. Because it is a simple datapack that only modifies a block tag, it has zero impact on server performance and does not conflict with other mods or datapacks. It loads quickly and can be added or removed at any time without corrupting your world. If you are looking to download Aeronautics Anti-Grief & Dupe Patch, always get it from a trusted source to ensure you have the latest block list and no malicious code.
Final Thoughts
Exploits can ruin the fun on any multiplayer server, but with a few simple steps you can keep your world safe. The Aeronautics Anti-Grief & Dupe Patch for Minecraft is an essential addition for any server running Create: Aeronautics. It stops the most damaging terrain griefing and item duplication tricks, is easy to install and customize, and works silently in the background. Combine it with a claim mod, and you will have a secure environment where players can focus on building incredible flying machines instead of worrying about raiders. Protect your server today and let creativity soar without the risk.