The Fossils and Archeology Mod new update line, the 9.x series, is the biggest change in the mod's history. The team rebuilt it from scratch for modern Minecraft and kept releasing improvements across 1.18.2 to 1.20.1. Here is what changed and why it matters for your worlds.
A complete internal rewrite
The move to 1.18.2 was not a port. The developers rewrote the code base, which let them fix long-standing issues instead of patching around them. The result is a mod that behaves predictably and is easier to keep updated.
One code base, two loaders
Thanks to Architectury, every release now ships for both loaders at the same time. Fabric players no longer wait for ports or rely on unofficial builds.
Smaller file size
The rewrite also trimmed the download. Smaller files mean faster modpack installs and less load on servers that push updates to many players.
Creatures look and move better
New models and animations arrive through GeckoLib. Walking, attacking and idle poses are smoother, and large animals finally move like large animals.
Improved hitboxes
More Hitboxes gives long creatures accurate collision. Hitting a sauropod's neck or a crocodile's tail now registers where you expect.
Smarter AI and navigation
Path-finding was reworked, so creatures get stuck less often and handle slopes, water and fences more reliably.
New content to discover
The update added ten new mobs, new fossil variants, new plants and a new tree type. Structures were reworked too, including a redesigned Anu castle for the late game.
Quality-of-life additions
Shearable mammoths, new vase models, figurines and advancements round out the release. Machine recipes now use data-driven serializers and tags, which makes them easy for pack makers to adjust.
Should you update?
For new worlds, yes. The modern builds are better in every area players notice. Old 1.12.2 worlds cannot be carried over, so keep them on their original version. Grab the newest file from our download page and read the feature overview to see everything included.
