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Big BrainMinecraft mod for 26.3

Improved AI for various mobs!

newest supported release 26.3World Mobs
Latest version
bigbrain-2.2.9-1.21.1.jar
Minecraft
1.16.3 to 26.3
Java
Java 25+
Loaders
NeoForge, Forge
Licence
not stated
Downloads
1.5M
Updated
11 d ago
Available on
CurseForge

Minecraft versions

Every version Big Brain declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
26.3NeoForge, Forge25+declared15 Sept 2026
1.21.1Forge, NeoForge21+declared8 Aug 2024
1.21NeoForge, Forge21+declared13 Jun 2024
1.20.2Forge, NeoForge17+declared20 Sept 2023
1.20.1NeoForge, Forge17+declared12 Jun 2023
1.20Forge, NeoForge17+declared2 Jun 2023
1.19.4NeoForge, Forge17+declared14 Mar 2023
1.19.3NeoForge, Forge17+declared7 Dec 2022
1.19.2NeoForge, Forge17+declared5 Aug 2022
1.19.1NeoForge, Forge17+declared27 Jul 2022
1.19NeoForge, Forge17+declared7 Jun 2022
1.18.2Forge, NeoForge17+declared28 Feb 2022
1.18.1NeoForge, Forge17+declared10 Dec 2021
1.18NeoForge, Forge17+declared30 Nov 2021
1.17.1Forge, NeoForge16+declared6 Jul 2021
1.16.5NeoForge, Forge8+declared14 Jan 2021
1.16.4NeoForge, Forge8+declared29 Oct 2020
1.16.3NeoForge, Forge8+declared10 Sept 2020

Download

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

Browse 44 indexed releases

For Minecraft 26.3

Choose the loader you use before downloading.

  • NeoForge

    bigbrain-3.0.0-26.3.0.jar · 25 Oct 2026 · bigbrain-3.0.0-26.3.0.jar

    Get NeoForge

Most recently published release

bigbrain-2.2.9-1.21.1.jarrelease25 Oct 2026

bigbrain-2.2.9-1.21.1.jar · 85 KB · for 1.21.1 · NeoForge

Download this release
3704a291dc60…
Older versions24
  • bigbrain-3.0.0-26.3.0.jar25 Oct 202626.389 KBccf91bd58aff…Get
  • bigbrain-1.20.1-1.7.8.jar5 Sept 20261.20.180 KB27f40a5db550…Choose file on publisher ↗
  • bigbrain-2.2.8-1.21.1.jar5 Sept 20261.21.185 KB49b6ff4517aa…Get
  • bigbrain-2.2.7-1.21.1.jar19 Jul 20261.21.185 KB53 downloads4736a44cd8b0…Get
  • bigbrain-1.20.1-1.7.7.jar19 Jul 20261.20.180 KB2 downloadsc1bd18a2e2c2…Choose file on publisher ↗
  • bigbrain-2.2.6-1.21.1.jar14 Jul 20261.21.185 KB52 downloads0b35857c8190…Get
  • bigbrain-1.20.1-1.7.6.jar7 Dec 20251.20.180 KB236 downloads807728da2ba7…Choose file on publisher ↗
  • bigbrain-1.20.1-1.7.5.jar29 Nov 20251.20.179 KB177 downloadsad0b58091da5…Get
  • bigbrain-2.2.5-1.21.1.jar12 Jun 20251.21.186 KB1.9k downloads46667ff9dcaa…Get
  • bigbrain-2.2.4-1.21.1.jar24 Dec 20241.21.183 KB1.5k downloads91d3e171b8d1…Get
  • bigbrain-2.2.3-1.21.jar21 Jul 20241.21.1, 1.2183 KB1.3k downloads8827f2052402…Get
  • bigbrain-2.2.2-1.21.jar9 Jul 20241.2183 KB190 downloads16c743688498…Get
  • bigbrain-2.2.1-1.21.jar25 Jun 20241.2183 KB169 downloadsdf5c3e7c6ee4…Get
  • bigbrain-2.2.0-1.21.jar14 Jun 20241.2184 KB147 downloads343197934670…Get
  • bigbrain-1.20.1-1.7.4.jar14 Jun 20241.20.179 KB60.3k downloads319cc2a2a42a…Get
  • bigbrain-1.20-1.7.4-neoforge-compatible.jar14 Jun 20241.20.179 KB564 downloadsdf4765be5092…Choose file on publisher ↗
  • bigbrain-1.20.2-1.7.5.jar8 Oct 20231.20.279 KB1.9k downloads06a2a09b1b0d…Get
  • bigbrain-1.19.2-1.6.7.jar17 Sept 20231.19.20.3 MB28.4k downloadse32569c20c85…Choose file on publisher ↗
  • bigbrain-1.20-1.7.3.jar17 Sept 20231.20.180 KB56.7k downloads52c740b95787…Choose file on publisher ↗
  • bigbrain-1.19.2-1.6.6.jar24 Jul 20231.19.20.3 MB2.9k downloads5b7c33476d40…Get
  • bigbrain-1.19.4-1.6.8.jar24 Jul 20231.19.40.3 MB789 downloads55c1dda64169…Get
  • bigbrain-1.20-1.7.2.jar24 Jul 20231.20.1, 1.2080 KB12.5k downloadsfe02b671c277…Get
  • bigbrain-1.19.4-1.6.7.jar4 Jul 20231.19.40.3 MB392 downloads2b24cabcdd21…Get
  • bigbrain-1.20-1.7.1.jar1 Jul 20231.20.1, 1.2079 KB1.2k downloadse66303991620…Get

Frequently asked

Does Big Brain work on Minecraft 26.3?

Yes. 26.3 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 1.16.3 up to 26.3. The full list is in the table above, with the Java runtime each version needs next to it.

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?

Among the supported Minecraft releases above, the highest recorded requirement is Java 25 or newer. Use the requirement for the exact Minecraft version you run; previews and snapshots may differ.

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 CurseForge, 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.Jade 🔍Shows information about what you are looking at. (Hwyla/WAILA fork for Minecraft 1.16+)

Details from CurseForge, where the author last updated it on 25 Oct 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? .