Fossilised Mobs
by FrankieJackk
Fossilised Mobs adds fossil blocks to the Overworld, Nether and End, and each one hides a spawn egg from a creature found in that dimension.
What it does
Fossilised stone, fossilised deepslate, fossilised netherrack and fossilised end stone generate in newly created chunks, replacing a small share of the surrounding material. Mining one of these blocks yields a random fossilised spawn egg from that dimension's mob pool rather than the block itself. Fossils are placed in the world on purpose, so players can explore a new chunk to find them.
Each egg has to be revived before it hatches. Placing a fossilised spawn egg with one water bucket on the crafting grid returns the normal spawn egg, and the water bucket comes back empty so it can be used again. The mod ships separate passive and hostile pools for Overworld eggs, covering animals such as Axolotl, Camel, Fox, Panda and Sniffer, along with Villager and Wandering Trader. Nether and End pools include Blaze, Ghast, Piglin, Enderman and Shulker, among others.
Fossilised Mobs is built for NeoForge and is published for 1.21.1 only, with the latest file 1.3.1 dated 2026-10-03. A server running it needs every connecting player to have it too. The code is not open source; the mod is released under All rights reserved.
Key features
Dimension fossil blocks
Fossil variants of stone, deepslate, netherrack and end stone appear in their matching dimension.
Eggs instead of blocks
Mining a fossil block drops a random fossilised spawn egg from that dimension's mob pool.
Revival with water
A fossilised egg is combined with one water bucket to become a usable spawn egg, and the bucket is returned empty.
Recognisable egg textures
Each fossilised egg has a darkened, mineral-aged texture based on the colours of its normal spawn egg.
Generous discovery rates
Fossil veins try more often per chunk than in a standard setup, and they only generate in terrain players have not yet explored.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
Skyborn Piglins is a NeoForge mod for 1.21 – 1.21.4, with client and server support under the MIT License. Piglin Brute Prevention is a NeoForge mod for 1.21 – 1.21.11 that is server-side only, so clients need nothing installed, and it is released under All rights reserved. Cobblemon : Shiny & Legendary fossil is a NeoForge mod for 1.21 – 1.21.3 that runs on client and server and is also released under All rights reserved.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Fossilised Mobs | NeoForge | 1.21.1 | Client and server | 2026-10-03 |
| Skyborn Piglins | NeoForge | 1.21 – 1.21.4 | Client and server | 2025-04-22 |
| Piglin Brute Prevention | NeoForge | 1.21 – 1.21.11 | Server-side only | 2026-01-14 |
| Cobblemon : Shiny & Legendary fossil | NeoForge | 1.21 – 1.21.3 | Client and server | 2026-02-12 |
Questions
Does Fossilised Mobs need to be installed on the server?
How is a fossilised egg turned into a spawn egg?
Which game versions does Fossilised Mobs support?
In the catalog
Fossilised Mobs 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
Fossilized Mobs is a NeoForge mod for Minecraft 1.21.1 that adds a new fossil-hunting progression to every dimension. While mining, players can discover fossilized versions of stone, deepslate, netherrack, and end stone. These blocks generate naturally in newly created chunks, replacing small amounts of their normal…
Official listing
- Modrinth page
- modrinth.com/mod/fossilised-mobs
- Owner
- FrankieJackk
- Published
- 2026-09-01
- Updated on Modrinth
- 2026-10-03
- Facts verified
- 2026-10-15