Redstone Additions
by Ancar
Redstone Additions brings new redstone components and datapack-driven mechanics to Minecraft 1.21.4 and later builds, with breeders, block breakers, conveyors and block placers among its additions.
What it does
The mod is a datapack that adds new redstone components and mechanics, so builders can extend simple circuits into automated machinery. Enchanting and crafting also gain a few custom routes: certain items thrown over an enchantment table, a lava smooth stone transformation with small chances, and combinations of material and reactor cores pressed and run together.
Installation places the datapack in the world's datapacks folder, then reloads the world. Server owners need the datapack on the server, while a Fabric, Forge, NeoForge or Quilt build of the same release is an optional companion that players can add on the client side. The mod is open source under the Apache License 2.0 and covers the game versions 1.21.3 – 1.21.9, with the latest file for 1.21.5 dated 2025-09-06.
Key features
Breeders and block breakers
Breeder, block breaker and conveyor blocks let a contraption move and process items without manual work.
Block placers
Block placers extend redstone builds with automated placement, alongside the new redstone components.
Enhanced redstone mechanics
The added components change how signals and circuits behave, adding options beyond vanilla redstone.
Enchantment table and crafting routes
Items thrown over an enchantment table and certain item combinations pressed and run produce specific results.
Vanilla-friendly design
The additions stay close to vanilla redstone, so existing builds and worlds keep working as before.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Redstone builders and survival players who want automated machinery without leaving vanilla mechanics. Server owners can add it to a world through a datapack, and players who build technical contraptions will find the new components most useful.
How it compares
Redstone Ready Bundles is open source under the MIT License and runs on Fabric for 1.21.10, server-side only. Block Placer for NeoForge covers 1.21.1 – 1.21.5 and is not open source. Redstone Additions is a datapack that the server alone needs, and its open-source Apache License 2.0 applies to all loaders.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Redstone Additions | Fabric, Forge, NeoForge and Quilt | 1.21.3 – 1.21.9 | Server required, client optional | 2025-10-05 |
| Redstone Ready Bundles | Fabric | 1.21.10 | Server-side only | 2025-11-18 |
| Block Placer | NeoForge | 1.21.1 – 1.21.5 | Client and server | 2025-05-20 |
Questions
Does Redstone Additions need a specific loader?
Do players have to install Redstone Additions?
Which game versions does Redstone Additions cover?
In the catalog
Redstone Additions is one of 4,058 Storage mods on ModsFinder, and one of 2,474 Storage mods for Fabric. 13,427 mods support Minecraft 1.21.9.
More from Ancar
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What the author says
Welcome to the ultimate redstone enhancement datapack for Minecraft 1.21.4! Get ready to revolutionize your redstone builds with powerful new components and mechanics. Transform your redstone contraptions from simple circuits into incredible automated machinery. Whether you're a technical player or just getting…
Official listing
- Modrinth page
- modrinth.com/mod/redstone-additions-old
- Owner
- Ancar
- Published
- 2025-04-06
- Updated on Modrinth
- 2025-10-05
- Facts verified
- 2026-10-15