CurseForge · Minecraft mod
HB's Structures over Time
Upgrade modded structures into other modded structures over the course of the game
Quick answer
Which HB's Structures over Time release should I use?
HB's Structures over Time hbs_structures-fabric-1.21.1-1.2.0.jar targets 1.20.1 with Fabric. The project page does not say whether this file belongs on the client, dedicated server, or both. All 3 required mods have matching files.
Where it goes
Is HB's Structures over Time required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does HB's Structures over Time hbs_structures-fabric-1.21.1-1.2.0.jar need?
hbs_structures-fabric-1.21.1-1.2.0.jar. Change the file and its required mods may change too.
Install Balm, HB's Foundation, Fabric API first. We found matching files for this game-version and loader setup. 1 comes through another mod in the chain.
1 extra mod was pulled in by another dependency. Indented rows show who needs each one. We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add HB's Structures over Time without breaking your instance.
Built for HB's Structures over Time hbs_structures-fabric-1.21.1-1.2.0.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use hbs_structures-fabric-1.21.1-1.2.0.jar. It targets 1.20.1 with Fabric; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install Balm, HB's Foundation, Fabric API first. We found matching files for this game-version and loader setup. 1 comes through another mod in the chain.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside hbs_structures-fabric-1.21.1-1.2.0.jar. It opens that exact file at the source.
About this project
What does HB's Structures over Time add?

**> ### ALPHA RELEASE — Known Issues
- Structure upgrades may take a few minutes to process — check the logs if something seems stuck
- Structures do not yet clean up their associated entities when upgrading
- If structures are not upgrading, try increasing your render distance
- Use
/hbStructures getDetails(no arguments) to inspect the nearest structure's current state **
Overview
HB's Structures Over Time is a Minecraft mod that allows structures to grow and evolve into other structures over the course of your game. This creates extremely dynamic worlds — where late-game structures don't appear until you're properly equipped, and where the world never feels cluttered by structures you aren't ready for yet.
Why You Might Want This Mod
- Change modded structures into other modded structures over time, triggered by item or dimension-based conditions
- Restrict late-game structures from spawning until the player is later into the game
- Make certain structures only appear under special conditions — like at night
Main Features - Optional Upgrade triggers
- Use the JSON config file (launch a new world or see me github file) to map certain structures and their progression plan

Conditions that Prevent Structure Upgrades

Future Features
- Support for dimensions beyond the Overworld
- Cyclic upgrades — the final stage reverts back to the first
- Unique upgrades — a structure upgrades only once per world, making it a unique landmark
Configuration
- The JSON config controls what structures upgrade and when
- The **TOML ** sets default values referenced by the JSON
Example configurations are on GitHub.
Project description from CurseForge.
Pick your setup
HB's Structures over Time by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.1
1 loader build1.20.1
2 loader buildsCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
HB's Structures over Time versions and loaders
hbs_structures-fabric-1.21.1-1.2.0.jar
25 Aug 2026
hbs_structures-neoforge-1.21.1-1.2.0.jar
25 Aug 2026
HBs_Structures_Over_Time-forge-1.20.1-1.1.0.jar
4 Jun 2026
HBs_Structures_Over_Time-fabric-1.20.1-1.1.0.jar
4 Jun 2026
HBs_Structures_Over_Time-fabric-1.20.1-1.0.0.jar
2 Jun 2026
HBs_Structures_Over_Time-forge-1.20.1-1.0.0.jar
2 Jun 2026
Looking for an older file? The official CurseForge project page is in Resources.