Gefra
by Live
Gefra is a Forge technology mod that adds a barrier generator, a block that sets a world border and keeps chunks loaded around it.
What it does
A barrier generator changes how a world is played, and it works only when one generator exists in the world, since more than one does not work correctly. Players feed it items through direct funnels and need enough free space around it, because the generator needs room to place its barrier. Placing the generator sets the center of the barrier and moves the world spawn point to that place, which lets players start in creative and move on to survival.
Gefra runs on client and server and is released under the MIT License. Files exist for Forge only, for 1.20.1, with the 1.0.0 file published on 2024-03-29. The mod is not open source. The server and every player need it, so both sides must run the same build.
Key features
Barrier generator
A block that builds a world border barrier, changing the play area and the course of a creative or survival game.
Item-fed operation
The generator checks the number of items it receives every 5 seconds and uses them to change the size of the barrier.
Chunk loading around the generator
The generator's chunk and the eight neighboring chunks are made non-loadable and always loaded, including in another dimension.
Game rules and commands
New game rules control whether the generator works, its efficiency and its minimum radius, and a command removes loaded chunks.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Creative-to-survival play
Players can start with the generator placed in a convenient spot in creative and then move the game toward survival.
Controlled play areas
Server owners can use the game rules to tune the barrier efficiency and minimum radius for their world.
Who it’s for: Players who want a world border that grows from items, and server owners who want to control its size and the chunks it keeps loaded with commands and game rules.
How it compares
SoundBarrier is a Forge mod for 1.20.1 – 1.20.6 that is client and server, released under All rights reserved and not open source. Void Generator is also a Forge mod, for 1.20.1 – 1.20.2, client and server, released under All rights reserved and not open source. Create: Stone Generator is a Forge mod for 1.20.1 only, client and server, under the MIT License and not open source, so it covers a different kind of generator.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Gefra | Forge | 1.20.1 | Client and server | 2024-03-29 |
| SoundBarrier | Forge | 1.20.1 – 1.20.6 | Client and server | 2026-03-09 |
| Void Generator | Forge | 1.20.1 – 1.20.2 | Client and server | 2026-07-31 |
| Create: Stone Generator | Forge | 1.20.1 | Client and server | 2025-06-23 |
Questions
Does the barrier generator need Forge?
Does Gefra have to be installed on the server?
Can more than one barrier generator run in a world?
How is the barrier size controlled?
In the catalog
Gefra is one of 8,499 Technology mods on ModsFinder, and one of 4,122 Technology mods for Forge. 34,764 mods support Minecraft 1.20.1.
More from Live
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What the author says
Mod for Forge Minecraft 1.20.1. Adds a barrier generator to the game, which offers a new style of play - you need to feed the generator with items so that you have more free space, otherwise you will have very little available space. And to feed objects into it, you just need to direct the funnels and put the objects…
Official listing
- Modrinth page
- modrinth.com/mod/gefra
- Owner
- Live
- Published
- 2024-03-29
- Updated on Modrinth
- 2024-03-29
- Facts verified
- 2026-10-15