CobbleOreGenerator
CobbleOreGenerator changes what a cobblestone generator produces, so that some of its cobblestone comes out as ore instead.
What it does
When lava and water meet to form cobblestone, CobbleOreGenerator gives each result a 25% shot at turning into an ore block. The choice is made by weighted probabilities set in a JSON config file, where each block ID receives a weight. A higher weight makes that block more common among the ores that drop. The mod ships with default ore weights that resemble vanilla ore frequencies, and the config can be edited to add block IDs from other mods, for example ores that another mod adds.
The mod only modifies cobblestone generation and hooks fluid interactions through mixins. It is based on the original OffsetMods538 mod and is published for Fabric alone, for 1.21.1 – 1.21.11, with 1.1.0 for 1.21.11 as the latest file. It is server-side only, so players join without installing anything, and the code is open source under the MIT License.
Key features
Ore chance on generation
Each cobblestone produced by a lava and water generator has a 25% chance to become an ore block instead.
Weighted ore selection
A JSON config file sets a weight for each block ID, and the chosen ore is drawn according to those weights.
Default vanilla-style weights
The bundled defaults follow the frequencies of vanilla ores, so the output feels familiar without any edits.
Modded ore support
Block IDs from other mods can be added with their own weights, so ores from additional mods can appear in generated stone.
Compatibility
Latest build for each game version and loader.
1.21.x11 of 11 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Server economies
A server owner can raise the weight of valuable ores to make generators a steadier source of them.
Chaos or simple setups
Weights can be set so that one rare block dominates, or so that common ores appear, depending on the desired pace.
Who it’s for: Server owners who run Fabric servers and want cobblestone generators to yield ores, and players who build generator setups on those servers.
Questions
Does CobbleOreGenerator need Fabric API?
Do players need to install CobbleOreGenerator?
Can ores from other mods be added to the config?
In the catalog
CobbleOreGenerator is one of 29,952 Game mechanics mods on ModsFinder, and one of 19,630 Game mechanics mods for Fabric. 19,862 mods support Minecraft 1.21.11.
Similar mods
What the author says
A Minecraft Fabric mod for version 1.21.1 that makes cobblestone generators generate ores! Based on the original mod by OffsetMods538. When lava and water interact to create cobblestone in a generator, this mod has a 25% chance to replace that cobblestone with a random ore based on weighted probabilities defined in…
Official listing
- Modrinth page
- modrinth.com/mod/cobbleoregenerator
- Owner
- krsticmilos02
- Published
- 2025-11-04
- Updated on Modrinth
- 2026-07-22
- Facts verified
- 2026-10-15