Ore Renewal
by SynderisDev
Ore Renewal lets an established NeoForge world receive newly added modded ore in chunks that were generated before the ore mod was installed.
What it does
When a player adds an ore mod to a long-running modpack, the new ore is normally missing from explored territory, since most players never travel far beyond it. Ore Renewal fills that gap by applying the new ore generation to chunks that already exist, without rerunning terrain, noise, surfaces, carvers, structures or biome generation. It only invokes the ore-generation features it detects.
Detection is automatic: the mod finds newly added ore placed-feature IDs and records completed migrations separately for each world dimension, so a migration is never applied twice to the same chunk. Newly generated chunks are skipped because normal world generation already handled them. Ore placement keeps the ore feature's own height, rarity, biome and dimension rules. Vanilla-style ore generators and the custom generator from Mekanism are recognized, and work is spread out so large chunk-loader queues do not starve areas loaded by players.
Ore Renewal is a server-side mod and is open source under the MIT License. It is published for NeoForge on Minecraft 1.21.1 only, with the latest file, 1.0.2, dated 2026-07-29. Back up important worlds before running a migration. Creating a world only stores its starting baseline; an established world then gets one careful pass for non-vanilla ore features already installed.
Key features
Detects new ore features
New ore placed-feature IDs are found automatically, including mods added after the world was first created.
One-time chunk migration
Each chunk receives a given migration once, and completed migrations are stored per dimension.
Respects ore rules
Height, rarity, biome and dimension settings of each ore feature are kept during placement.
Commands for progress
Commands let an operator check the migration queue, apply a specific detected feature and save progress immediately.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
Retrogen is a Fabric and NeoForge option for server owners who want to regenerate terrain, and it is not open source, is licensed as All rights reserved, and requires the server with the client optional. Ore Generation Disabler is a NeoForge mod under the MIT License that needs the client and server to both run it, so it differs in environment and does not add ore to existing chunks. NeoGeo: New Terrain Features is server-side only under the MIT License and only targets NeoForge 1.21.1.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Ore Renewal | NeoForge | 1.21.1 | Server-side only | 2026-07-29 |
| Retrogen | Fabric and NeoForge | 1.21.1 | Server required, client optional | 2026-07-13 |
| Ore Generation Disabler | NeoForge | 1.21.1 | Client and server | 2026-07-11 |
| NeoGeo: New Terrain Features | NeoForge | 1.21.1 | Server-side only | 2026-05-19 |
Questions
Does Ore Renewal need to be installed on clients?
Can a migration be run twice on the same chunk?
Which Minecraft and NeoForge versions does Ore Renewal support?
In the catalog
Ore Renewal is one of 8,515 World generation mods on ModsFinder, and one of 4,175 World generation mods for NeoForge. 32,366 mods support Minecraft 1.21.1.
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What the author says
Ore Renewal is a server-side NeoForge mod for Minecraft 1.21.1 that applies newly added modded ore generation to already-existing chunks. When an ore-producing mod is added to a long-running modpack, players normally have to travel far beyond explored territory to find its resources. Ore Renewal detects the new ore…
Official listing
- Modrinth page
- modrinth.com/mod/ore-renewal
- Owner
- SynderisDev
- Published
- 2026-07-29
- Updated on Modrinth
- 2026-07-29
- Facts verified
- 2026-10-15