RTStrucures Framework
by Awyvrix
RTStrucures Framework is a NeoForge library for building, saving and pasting RTS structures, with build logic and a placement anchor.
What it does
Other mods can use the framework to define functional RTS multiblock structures, including alien structures with plant-like construction and visual effects. Structures can be saved, pasted, and placed at an anchor position chosen by the player. Build types control how construction proceeds, and a speed setting in blocks per tick sets how fast it runs. Replaced blocks follow the structure definition rather than being cleared first.
The framework covers RTS simulation and organic building systems, and it also supports cinematic building and instant construction for debugging. Shift with right click and Shift with left click are used to copy and place structures. Library methods for managing structures are provided for developers. Files are published for NeoForge 1.21.1 only, and the code is MIT licensed and open source. The mod is a Library category item, with Management, Utility and Game mechanics as its other categories.
Key features
Structure save and paste
Structures can be saved from a world and pasted again, so builds can be reused across a map.
Placement anchor
A chosen anchor position sets where a pasted structure lands, relative to the player's targeted block.
Build types and speed
Build types define the construction logic, and a per-tick block speed sets how quickly placement proceeds.
Cinematic and instant building
Construction can be shown as a cinematic sequence or completed instantly, which helps when debugging structures.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Structures in survival worlds
Protected survival worlds can host RTS structures that grow block by block instead of appearing at once.
Copy and paste building
Players can copy a finished build with a shortcut and paste it at a chosen anchor in the same world.
Who it’s for: Mod developers who want to add functional RTS multiblock structures, and server owners who run custom building mechanics on NeoForge 1.21.1.
How it compares
Unnamed Framework covers Fabric, Forge, NeoForge and Quilt for 1.21 – 1.21.1 and is licensed as All rights reserved. RTS building: Build From Above is the other RTS building option, published for Fabric, Forge and NeoForge 1.12.2 – 26.1.2 under the GNU Lesser General Public License v3.0 only. Quirky Vehicles Framework is open source and runs on Fabric, Forge and NeoForge for 1.21 – 1.21.3.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| RTStrucures Framework | NeoForge | 1.21.1 | Client and server | 2026-05-26 |
| Unnamed Framework | Fabric, Forge, NeoForge and Quilt | 1.21 – 1.21.1 | Client and server | 2025-01-11 |
| RTS building: Build From Above | Fabric, Forge and NeoForge | 1.12.2 – 26.1.2 | Client and server | 2026-10-06 |
| Quirky Vehicles Framework | Fabric, Forge and NeoForge | 1.21 – 1.21.3 | Client and server | 2025-02-25 |
Questions
Does RTStrucures Framework need to be on both sides?
Which loader does RTStrucures Framework support?
Is RTStrucures Framework open source?
In the catalog
RTStrucures Framework is one of 3,514 Library mods on ModsFinder, and one of 1,449 Library mods for NeoForge. 32,366 mods support Minecraft 1.21.1.
More from Awyvrix
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What the author says
This mod provides functional for RTS multiblock structures. It also can be used as a structure copy/paste To save structure you need structure tool - use /give or operator tab;
Official listing
- Modrinth page
- modrinth.com/mod/rtstrucures-framework
- Owner
- Awyvrix
- Published
- 2026-05-09
- Updated on Modrinth
- 2026-05-26
- Facts verified
- 2026-10-15