Seed Guard
by DrexHD
Seed Guard stops world seeds from being derived, so a seed cracked from a known map cannot predict where structures or ore appear.
What it does
Seed Guard targets the features that Minecraft places after the basic surface shape is built: trees, sugar cane, grass, ores, and structures such as villages and pillager outposts. Each feature normally uses its own seed, hardcoded in vanilla, so the same world seed always yields the same layout. The mod replaces those seeds with randomly generated ones, which makes it impossible to work backwards from the placement of features to the world seed.
The terrain itself is left alone, so a world with the mod looks the same as one without it. Only the placement of features and structures changes. Seed Guard is server-side only, so players join without installing anything, and it is open source under the MIT License. Builds are published for Fabric and Quilt, with snapshot builds released alongside the regular versions.
Key features
Random feature seeds
Each feature seed is replaced with a randomly generated value, so placement cannot be traced to the world seed.
Unchanged terrain
Surface shape, biomes and the overall look of the world stay as vanilla generation produces them.
Structure placement
Villages, pillager outposts and other structures are placed with the replaced seeds, hiding their vanilla positions.
Snapshot support
Snapshot builds are published alongside the releases, so the mod can be tested on upcoming versions.
Compatibility
Latest build for each game version and loader.
26.x5 of 5 versions with builds
1.21.x12 of 12 versions with builds
1.20.x7 of 7 versions with builds
This mod also publishes snapshot builds. Snapshots are not shown in the matrix.
Use cases
Who it’s for: Server owners who want world generation protected from seed cracking. Players join without installing anything, and the mod changes only the placement of features and structures.
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. It can run on a client or server, and installing it on one side is enough. Panda Per-World-Seed is server-side only, open source under the CC0 1.0 Universal license and published for 1.21.1 – 26.3 on Fabric. Seed Guard is server-side only and covers the latest releases on Fabric and Quilt under the MIT License.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Seed Guard | Fabric and Quilt | 1.20 – 26.3 | Server-side only | 2026-09-20 |
| SecureSeed-Reborn | Fabric | 1.21 – 1.21.4 | Client or server, optional | 2024-12-05 |
| Panda Per-World-Seed | Fabric | 1.21.1 – 26.3 | Server-side only | 2026-10-04 |
Questions
Does Seed Guard need to be installed on the client?
Does Seed Guard change the terrain?
Which loaders does Seed Guard support?
Does Seed Guard work on the latest versions?
In the catalog
Seed Guard is one of 8,515 World generation mods on ModsFinder, and one of 4,027 World generation mods for Fabric. 8,071 mods support Minecraft 26.3.
More from DrexHD
Similar mods
What the author says
Protects your world seed by altering feature and structure placement, preventing seed cracking. When generating worlds Minecraft builds the basic surface shape, then applies biomes and finally adds surface decorations, which consist of features (trees, sugar cane, grass, ores...) and structures (villages, pillager…
Official listing
- Modrinth page
- modrinth.com/mod/seedguard
- Owner
- DrexHD
- Published
- 2023-08-12
- Updated on Modrinth
- 2026-09-20
- Facts verified
- 2026-10-15