Void_Filler
by teri_farti
Void_Filler is a NeoForge technology mod for 1.21.1 that adds a custom energy system called Void Energy, with machines, pipes and a set of Void-themed materials and tools.
What it does
A Void Generator produces Void Energy, and a Void Extractor pulls energy from the environment. Void Energy Pipes carry it between machines in a chorus-style model, so the machines form a connected pipe infrastructure rather than standing alone.
The mod is built as a modular, extensible set of machines, energy systems and material progression, meant to support later additions such as mechanics, structures, mobs and world generation. Its source code is public and released under the GNU Affero General Public License v3.0 only, so it is open source. It requires NeoForge and runs on client and server, so the server and every player need it.
Key features
Void Generator
A machine that produces Void Energy, the mod's own energy type, for powering other blocks.
Void Extractor
A machine that extracts energy from the environment and feeds it into the Void Energy network.
Void Energy Pipes
Pipes that transport Void Energy between machines in a chorus-style layout.
Void blocks and toolset
Solid Void blocks with special properties, plus a sword, pickaxe, axe, shovel and hoe made from Void materials.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Building an energy network
Players can place generators and extractors, then connect them with pipes to route Void Energy through a base.
Progressing through materials
The Void materials and tools form a progression path, letting players move from basic blocks to the toolset as they build up the network.
Who it’s for: Players who enjoy machine-based technology with pipe networks and an energy system to manage, and server owners who want a self-contained technology layer on NeoForge 1.21.1.
How it compares
Void Sword adds a Void weapon set and is not open source. It is published for NeoForge 1.21.4 – 1.21.9 under All rights reserved, so it does not overlap in version with this mod's 1.21.1 build. VoidDimension is open source under the MIT License and is published for 1.21.1 on NeoForge, the same version as Void_Filler, but it focuses on dimensions rather than energy machines.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Void_Filler | NeoForge | 1.21.1 | Client and server | 2026-02-15 |
| Void Sword | NeoForge | 1.21.4 – 1.21.9 | Client and server | 2025-10-07 |
| VoidDimension | NeoForge | 1.21.1 | Client and server | 2026-07-13 |
Questions
Does Void_Filler require NeoForge?
Does the server need Void_Filler installed?
Is the source code available?
In the catalog
Void_Filler is one of 8,499 Technology mods on ModsFinder, and one of 3,557 Technology mods for NeoForge. 32,366 mods support Minecraft 1.21.1.
Similar mods
What the author says
VoidFiller is a technology‑focused Minecraft mod built with an engineering‑driven approach to architecture, system design, and scalability. The mod introduces a modular ecosystem of machines, energy systems, materials, and progression, forming a foundation for future technological expansion.
Official listing
- Modrinth page
- modrinth.com/mod/void_filler
- Owner
- teri_farti
- Published
- 2026-02-15
- Updated on Modrinth
- 2026-02-15
- Facts verified
- 2026-10-15