
Simpleretrogen Mod 1.10.2, 1.8.9 is a utility mod that allows mods with world generation to perform re-injection of their content into existing generated chunks, and tracks which ones have been retrogenerated.

This allows you to add a new mod to your world and have it’s content retrogenerated into existing chunks. It works with the IWorldGenerator based system from FML used by most mods to inject simple content into world generation.
Simpleretrogen Mod Configuration:
To configure this mod you need to figure out which classes implement IWorldGenerator from the mod(s) you wish to regenerate.
As an example, slimeknights.tconstruct.world.worldgen.SlimeIslandGenerator is the worldgenerator for slime islands in Tinkers Construct.
general {
# Marker to apply to chunks to indicate retrogen occurred
S:marker=CPWRGMARK
# Maximum number of retrogens to run in a single tick
I:maxPerTick=100
# List of IWorldGenerator instances to fire retrogen for
S:worldGens < slimeknights.tconstruct.world.worldgen.SlimeIslandGenerator >
}
The example above will force slime islands to regenerate if they haven’t been. The marker value allows changing the marker, which is applied to any regenerated chunks, so changing the value will force the regenerations to run again. MaxPerTick controls how many chunks will be regenerated each tick, to ensure that the cost of regeneration doesn’t cause an unacceptable slowdown to your server.
Download Links for Simpleretrogen Mod 1.10.2, 1.8.9
For Minecraft 1.8.9
For Minecraft 1.10.2
- Edition: Minecraft Java
- File type: .jar
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: In MC Java Mods, or directly above on this page.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Downloads as 212533.mcaddon
- Download size: 10 KB
- Download link checked 30 Jul 2026 — working
- Mirrored on our own servers — the download does not depend on the original host
These come from our own check of the pack file, not from the source page.