Superflat Structures
by VirtualSofia
Superflat Structures lets structures generate on superflat worlds, with placement tied to biomes.
What it does
Structures normally need terrain, biomes and depth to spawn, which superflat presets lack. This NeoForge mod lets structures use biome-dependent placement on superflat presets, so they can appear in flat worlds where they otherwise would not. Mineshafts, for example, need underground space, and the author notes they can still fail to spawn on some presets; trial chambers also spawn less often with the mod.
The mod is built for pack makers creating superflat experiences, and it changes only structure generation, not the flat layer itself. It is server-side only, so players join without installing it. It is released for NeoForge 1.21.1 under the MIT License, and the source code is public.
Key features
Biome-dependent structure placement
Structures can be placed according to the biome they would normally sit in, even on a flat layer.
Generation above ground
Structures can generate above the surface, which keeps superflat presets from clustering all structures in the sky.
Trial chamber rate change
With the mod installed, trial chambers spawn less often than in the vanilla rules.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
SuperFlat Survival Addon is a NeoForge mod for 1.20.6, with a client and server environment and All rights reserved licensing. Better Superflat (End & Nether) is a Fabric and NeoForge mod for 1.21.8, server required with the client optional, under the MIT License.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Superflat Structures | NeoForge | 1.21.1 | Server-side only | 2025-11-13 |
| SuperFlat Survival Addon | NeoForge | 1.20.6 | Client and server | 2024-07-21 |
| Better Superflat (End & Nether) | Fabric and NeoForge | 1.21.8 | Server required, client optional | 2026-04-26 |
Questions
Does Superflat Structures need to be installed on the client?
In the catalog
Superflat Structures is one of 8,515 World generation mods on ModsFinder, and one of 4,175 World generation mods for NeoForge. 32,366 mods support Minecraft 1.21.1.
More from VirtualSofia
Similar mods
What the author says
This mod allows any structure to generate in any super flat preset, structures are still limited by other spawn conditions such as biome, and mineshafts needing to be underground.\ \ Note this mod also makes trial chambers spawn less often as when generating above ground as in most super flat presets they were…
Official listing
- Modrinth page
- modrinth.com/mod/superflat-structures
- Owner
- VirtualSofia
- Published
- 2025-11-05
- Updated on Modrinth
- 2025-11-13
- Facts verified
- 2026-10-15