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Big BrainMinecraft mod for 1.21.1

Mod that improves mob ai

client and servernewest supported 1.21.1Mobs
Latest version
2.2.7
Minecraft
1.19.2 to 1.21.1
Java
Java 21+
Loaders
NeoForge, Forge
Licence
LicenseRef-Multiple-licenses
Downloads
51.6k
Updated
18 d ago
Available on
Modrinth
Space NodeOur hosting

Host Big Brain servers

One click and Big Brain is installed with the right loader, on hardware built for it.

  • 1.21.1
  • NeoForge
  • Forge
  • 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 Big Brain declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1NeoForge, Forge21+declared8 Aug 2024
1.21NeoForge, Forge21+declared13 Jun 2024
1.20.2Forge, NeoForge17+declared20 Sept 2023
1.20.1Forge, NeoForge17+declared12 Jun 2023
1.20Forge, NeoForge17+declared2 Jun 2023
1.19.4Forge, NeoForge17+declared14 Mar 2023
1.19.3NeoForge, Forge17+declared7 Dec 2022
1.19.2Forge, NeoForge17+declared5 Aug 2022

Download

From Big Brain’s own host. Nothing is re-hosted here.

All 31 releases
2.2.7release19 Jul 2026

bigbrain-2.2.7-1.21.1.jar · 85 KB · for 1.21.1

Download latest
fafa5e6eda0f…
Older versions24
  • 1.7.719 Jul 20261.20.180 KB212 downloads8cf524314be6…Get
  • 2.2.614 Jul 20261.21.185 KB196 downloads2f3c547eff42…Get
  • 1.7.67 Dec 20251.20.180 KB6.0k downloads4ea2d75e81d7…Get
  • 1.20.1-1.7.529 Nov 20251.20.179 KB524 downloads36aafa159b7b…Get
  • 2.2.512 Jun 20251.21.186 KB5.1k downloadsec5efe0d18e6…Get
  • 2.2.424 Dec 20241.21.183 KB1.1k downloadsceb2ca505006…Get
  • 2.2.321 Jul 20241.21.1, 1.2183 KB793 downloads5a359bf64437…Get
  • 2.2.29 Jul 20241.2183 KB123 downloads46333dbff76c…Get
  • 2.2.125 Jun 20241.2183 KB117 downloads9c47baeba64f…Get
  • 1.20-1.7.4-neoforge-compatible15 Jun 20241.20.179 KB19.6k downloads40869c08587f…Get
  • 1.20.1-1.7.415 Jun 20241.20.179 KB2.6k downloads5e5e25c4b570…Get
  • 2.2.014 Jun 20241.2184 KB95 downloads3ef97d210bd8…Get
  • 1.20.2-1.7.58 Oct 20231.20.279 KB331 downloads1f034a3998bc…Get
  • 1.20-1.7.317 Sept 20231.20.1, 1.2080 KB2.8k downloads2a8c99a6ba6b…Get
  • 1.19.2-1.6.717 Sept 20231.19.20.3 MB2.8k downloads506f1ab2bf4f…Get
  • 1.19.2-1.6.624 Jul 20231.19.20.3 MB241 downloads21adcffec500…Get
  • 1.19.4-1.6.824 Jul 20231.19.40.3 MB232 downloads4f78c549f21e…Get
  • 1.20-1.7.224 Jul 20231.20.1, 1.2080 KB1.9k downloadse2ec9530c244…Get
  • 1.19.4-1.6.74 Jul 20231.19.40.3 MB110 downloads13788eeee478…Get
  • 1.20-1.7.11 Jul 20231.20.1, 1.2079 KB163 downloadsa5a09bbbfeca…Get
  • 1.19.4-1.6.621 Jun 20231.19.40.3 MB126 downloads336beb7f4234…Get
  • 1.20-1.7.015 Jun 20231.20.1, 1.2079 KB191 downloads6b114f8d21c7…Get
  • 1.19.4-1.6.59 Jun 20231.19.40.3 MB126 downloads34f6cbf3be44…Get
  • 1.19.2-1.6.59 Jun 20231.19.20.3 MB321 downloadsb1a69a011697…Get

Frequently asked

Does Big Brain work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version Big Brain 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 Big Brain support?

Everything the author has declared, from 1.19.2 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 Big Brain 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 Big Brain support?

NeoForge, Forge. 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 Big Brain?

On the newest Minecraft version it supports, Java 21 or newer. The requirement comes from the Minecraft version you run rather than from the mod itself, so on an older supported Minecraft the answer is that version's Java, not this one.

What licence is Big Brain under?

LicenseRef-Multiple-licenses, 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 Big Brain?

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 Big Brain 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. The download link goes to the source recorded for that release; verify the publisher, filename and 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.Jade 🔍Shows information about what you are looking at. (Hwyla/WAILA fork for Minecraft 1.16+)

Last checked 18 d ago against Modrinth. We do not host files and we do not republish descriptions; every download link points at the author’s own release.

Is this information wrong or missing something? .