CurseForge · Minecraft mod
Open Terrain Generator (OTG)
A data-driven world generation tool for Forge and Spigot that gives you full control over Minecraft’s world generation.
Quick answer
Which Open Terrain Generator (OTG) release should I use?
Open Terrain Generator (OTG) OpenTerrainGenerator-1.12.2-v9.7 targets 1.12.2 with Forge. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.
Where it goes
Is Open Terrain Generator (OTG) 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 Open Terrain Generator (OTG) OpenTerrainGenerator-1.12.2-v9.7 need?
OpenTerrainGenerator-1.12.2-v9.7. Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add Open Terrain Generator (OTG) without breaking your instance.
Built for Open Terrain Generator (OTG) OpenTerrainGenerator-1.12.2-v9.7. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use OpenTerrainGenerator-1.12.2-v9.7. It targets 1.12.2 with Forge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 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 OpenTerrainGenerator-1.12.2-v9.7. It opens that exact file at the source.
About this project
What does Open Terrain Generator (OTG) add?



OTG 1.16 beta for PaperSpigot and Forge has been released, grab it now!
See the wiki for updated (1.16.x) installation instructions: https://openterraingen.fandom.com/wiki/Installation.
Presets are being updated for 1.16, Skylands and Vanilla Vistas are already available on CurseForge.
Lots of new settings for MC 1.16 features.
Lots of new options for mods and modpacks, including modded biomes in OTG worlds and OTG nether/end.


Open Terrain Generator is a data-driven world generation tool for Forge and Spigot that gives you full control over Minecraft’s world generation.
It allows you to create completely custom generators and share them with other players as your own mods, called OTG presets.
Anyone can make a preset! Creating anything you can imagine from floating islands to cave worlds requires no knowledge of Java.






By default, OTG is bundled with a default preset that is very similar to vanilla world generation. If you want it to do COOL STUFF™ then you’ll need to create your own preset or download one that has already been made.
The good news is, the community has been hard at work creating OTG presets for many years, so there’s already a lot to choose from!
See the wiki for presets


How do I install a preset?
You install an OTG preset like a normal mod, by placing the mod jar in the mods folder along with the OTG jar. After this, the preset appears in the OTG world creation menu.
For more detailed instructions, including server setup – visit the wiki here
Known issues (1.12.2):
I updated OTG and got an error: When updating be sure to delete OTG-Core.jar from the 1.12.2 folder or it will not be updated.
Some problems with dimension management mods (RFTools) may occur, please report these on the OTG Discord or Github, thanks!
OTG does not support other mods' biomes spawning in OTG overworlds/dimensions, however most modded resources and mobs etc do spawn in OTG biomes.
OTG has some features to impersonate other mods' biomes and adopt their behaviours, e.g. the Biome Bundle 'O Plenty preset uses these to impersonate Biomes 'O Plenty biomes. You can also use a BOP overworld with OTG dimensions.
Project description from CurseForge.
Pick your setup
Open Terrain Generator (OTG) by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.12.2
2 loader builds1.11.2
1 loader build1.10.2
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Open Terrain Generator (OTG) versions and loaders
OpenTerrainGenerator-1.12.2-v9.7
OpenTerrainGenerator-1.12.2-v9.7.jar
16 Sept 2025
OpenTerrainGenerator-1.12.2-v9.6
OpenTerrainGenerator-1.12.2-v9.6.jar
13 Jul 2025
OpenTerrainGenerator-1.12.2-v9.5-R2
OpenTerrainGenerator-1.12.2-v9.5-R2.jar
23 Apr 2024
OpenTerrainGenerator-1.12.2-v9.5-R1
OpenTerrainGenerator-1.12.2-v9.5-R1.jar
27 Jun 2023
OpenTerrainGenerator-1.12.2-v9.5
OpenTerrainGenerator-1.12.2-v9.5.jar
3 Apr 2023
OpenTerrainGenerator-1.16.5-0.1.10
OpenTerrainGenerator-1.16.5-0.1.10.jar
18 Dec 2021
OpenTerrainGenerator-1.16.5-0.1.9
OpenTerrainGenerator-1.16.5-0.1.9.jar
15 Dec 2021
OpenTerrainGenerator-1.16.5-0.1.8
OpenTerrainGenerator-1.16.5-0.1.8.jar
14 Dec 2021
OpenTerrainGenerator-1.16.5-0.1.7
OpenTerrainGenerator-1.16.5-0.1.7.jar
12 Dec 2021
OpenTerrainGenerator-1.12.2-v9.4
OpenTerrainGenerator-1.12.2-v9.4.jar
11 Dec 2021
OpenTerrainGenerator-1.16.5-0.1.6
OpenTerrainGenerator-1.16.5-0.1.6.jar
2 Dec 2021
OpenTerrainGenerator-1.12.2-v9.3.jar
28 Dec 2020
Looking for an older file? The official CurseForge project page is in Resources.



