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Unusual Prehistory 2Minecraft mod for 1.21.1

Uncover fossils and revive prehistoric creatures!

client and servernewest supported release 1.21.1AdventureMobsWorldgen
Latest version
2.0.0-beta3
Minecraft
1.20.1 to 1.21.1
Java
Java 21+
Loaders
Forge, NeoForge
Licence
LicenseRef-Custom
Downloads
65.5k
Updated
1 mo ago
Available on
Modrinth
Space NodeOur hosting

Host Unusual Prehistory 2 servers

One click and Unusual Prehistory 2 is installed with the right loader, on hardware built for it.

  • 1.21.1
  • Forge
  • NeoForge
  • One click mod install
  • Loader matched for you
  • Ryzen CPUs
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Screenshots

Click a screenshot to open it. Screenshots are served from the author’s own host and belong to them.

Minecraft versions

Every version Unusual Prehistory 2 declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1Forge, NeoForge21+declared8 Aug 2024
1.20.1Forge, NeoForge17+declared12 Jun 2023

Download

From Unusual Prehistory 2’s own host. Nothing is re-hosted here.

Most recently published release

2.0.0-beta3beta25 Sept 2026

Unusual-Prehistory-2-1.21.1-2.0.0-beta3.jar · 1.1 MB · for 1.21.1 · NeoForge

Download this release
d7e28439073e…
Older versions16
  • 2.0.0-beta224 Sept 20261.21.11.1 MB0e0de8c786d8…Get
  • 2.0.0-beta124 Sept 20261.21.11.1 MB77c34a78acd9…Get
  • 1.20.1-1.4.33 Apr 20261.20.119.3 MB27.3k downloads60d7287e8ce1…Get
  • 1.20.1-1.4.22 Apr 20261.20.119.3 MB805 downloads13ccf6645130…Get
  • 1.20.1-1.4.11 Apr 20261.20.119.2 MB828 downloadsb1a461e364e9…Get
  • 1.20.1-1.4.01 Apr 20261.20.119.3 MB151 downloads8482220a2786…Get
  • 1.20.1-1.3.123 Mar 20261.20.117.3 MB2.6k downloads2c4fb3a09c21…Get
  • 1.20.1-1.3.023 Mar 20261.20.117.3 MB706 downloads7622890649d7…Get
  • 1.20.1-1.2.39 Dec 20251.20.112.3 MB18.5k downloadseb7febfdc570…Get
  • 1.20.1-1.2.29 Dec 20251.20.112.3 MB112 downloads344a9c6270c1…Get
  • 1.20.1-1.2.18 Dec 20251.20.112.2 MB562 downloadsff10e6a7a60c…Get
  • 1.20.1-1.2.07 Dec 20251.20.112.2 MB254 downloads2f95255bba05…Get
  • 1.20.1-1.1.228 Nov 20251.20.111.7 MB2.5k downloads9e0db0a02799…Get
  • 1.20.1-1.1.128 Nov 20251.20.111.7 MB57 downloadsbc6484f9fb02…Get
  • 1.20.1-1.1.028 Nov 20251.20.111.7 MB98 downloads4cde5274e010…Get
  • 1.20.1-1.0.023 Nov 20251.20.19.0 MB170 downloadse60ee0e5def4…Get

Dependencies

What Unusual Prehistory 2declares it needs, from the author’s own release metadata. A required one has to be installed alongside it or it will not load.

Just Enough Items (JEI)Optional. View Items and Recipes

Frequently asked

Does Unusual Prehistory 2 work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version Unusual Prehistory 2 declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.

Which Minecraft versions does Unusual Prehistory 2 support?

Everything the author has declared, from 1.20.1 up to 1.21.1. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install Unusual Prehistory 2 on the client or the server?

Both. Every player needs it installed and so does the server, so anyone joining without it will be refused.

Which platform or loader does Unusual Prehistory 2 support?

Forge, NeoForge. A build for one platform or loader will not necessarily load on another, so this is the first thing to check before the Minecraft version.

Which Java version do I need for Unusual Prehistory 2?

Among the supported Minecraft releases above, the highest recorded requirement is Java 21 or newer. Use the requirement for the exact Minecraft version you run; previews and snapshots may differ.

What licence is Unusual Prehistory 2 under?

LicenseRef-Custom, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.

How do I install Unusual Prehistory 2?

Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.

Where do I download Unusual Prehistory 2 safely?

Start with the author's page on Modrinth, which is where the data here is synced from. MCReference does not host or repackage files. When available, recorded download links go to the source for that release; verify the publisher, filename and any available checksum before running it.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

GeckoLibA 3D animation library for entities, blocks, items, armor, and more!BookshelfAn open source library for other mods!Cloth Config API (Fabric/Forge/NeoForge)Config Screen API for MinecraftJourneyMapReal-time map used for mapping in-game or your browser as you explore.Architectury APIAn intermediary api aimed to ease developing multiplatform mods.Enchantment DescriptionsAdds in-game descriptions for enchantments to tooltips.

Details from Modrinth, where the author last updated it on 25 Sept 2026. We do not host files or republish descriptions. Available download links point to the author’s own release.

Is this information wrong or missing something? .