AntiCracker
by debianer
AntiCracker is a Fabric mod that scrambles the seeds behind loot tables, chests and structure generation so world seeds are harder to crack.
What it does
Seed cracking tools reconstruct a world seed by working backward from the loot found in chests and from where structures sit. AntiCracker changes how loot table seeds are derived, so the chest contents and structure positions that a cracker would rely on no longer reveal the underlying world seed in a usable way. The aim is to make loot-table-based seedcracking take impractically long, which is why speedrunners are the audience the mod names.
The scrambling reaches the seeds that chests in several kinds of generated structures draw on, along with structure positions, structure layouts, decoration features, world carvers and the end pillars. Loot tables themselves and other parts of the game are left untouched, so the items players find keep their normal contents. The mod is client-side only, so a server does not need it installed for it to work.
The project is licensed under the MIT License and is open source. Its source code and issue tracker are public. Files cover Minecraft 1.16.1 – 1.16.5, and the latest Fabric build is hard-1.2.0 for 1.16.5, published on 2024-12-28. Fabric is the only loader offered.
Key features
Loot table seed scrambling
Seeds used when chests in structures pick their loot are scrambled, which breaks the link a seedcracker would follow.
Structure position scrambling
Structure placement seeds are altered, so the positions of villages and other structures no longer expose the world seed.
Decoration and carver seeds
Seeds for decoration features, world carvers and the end pillars are scrambled as well, covering more of world generation.
Vanilla loot preserved
Loot tables and their contents stay as they are in vanilla, changing only the seeding that reveals the world seed.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
SecureSeed-Reborn is a Fabric mod for 1.21 – 1.21.4 that is open source under the GNU General Public License v3.0 only, and it can run on the client or the server. Glitch is a Fabric mod for 1.21.11 that is open source under the MIT License and is client-side only, like AntiCracker, but it targets a much later version. Polymer PackSquash is a server-side only Fabric mod for 1.21.6 – 26.1.2 under the GNU Lesser General Public License v3.0 only, so it does not affect the client at all.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| AntiCracker | Fabric | 1.16.1 – 1.16.5 | Client-side only | 2024-12-28 |
| SecureSeed-Reborn | Fabric | 1.21 – 1.21.4 | Client or server, optional | 2024-12-05 |
| Glitch | Fabric | 1.21.11 | Client-side only | 2026-01-04 |
| Polymer PackSquash | Fabric | 1.21.6 – 26.1.2 | Server-side only | 2026-03-29 |
Questions
Which loader does AntiCracker use?
Does AntiCracker need to be installed on the server?
Does AntiCracker change the loot players find?
In the catalog
AntiCracker is one of 8,016 Management mods on ModsFinder, and one of 5,930 Management mods for Fabric. 5,992 mods support Minecraft 1.16.5.
Similar mods
What the author says
This mod prevents the cracking of world seeds in Minecraft speedruns, so runners don't get a unfair advantage by figuring out the seed of their world in advance. A fabric mod that scrambles the loot table seeds used by chests in various structures using a hash of the Minecraft world seed, making loot-table-based…
Official listing
- Modrinth page
- modrinth.com/mod/anticracker
- Owner
- debianer
- Published
- 2024-12-27
- Updated on Modrinth
- 2024-12-28
- Facts verified
- 2026-10-15