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Player2 AI NPCMinecraft mod for 1.21.1

This is not just another companion mod; it is a live showcase of the PlayerEngine framework, built to fundamentally change our perception of AI NPCs in Minecraft.

newest supported release 1.21.1Adventure RpgWorld Mobs
Latest version
player2npc-neoforge-1.21.1-1.4.0.jar
Minecraft
1.20.1 to 1.21.1
Java
Java 21+
Loaders
NeoForge, Fabric, Forge
Licence
not stated
Downloads
207.1k
Updated
4 mo ago
Available on
CurseForge

Screenshots

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

Minecraft versions

Every version Player2 AI NPC declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1NeoForge, Fabric, Forge21+declared8 Aug 2024
1.20.1NeoForge, Fabric, Forge17+declared12 Jun 2023

Download

From Player2 AI NPC’s own host. Nothing is re-hosted here.

Browse 38 indexed releases

For Minecraft 1.21.1

Choose the loader you use before downloading.

  • NeoForge

    player2npc-neoforge-1.21.1-1.4.0.jar · 17 Jul 2026 · player2npc-neoforge-1.21.1-1.4.0.jar

    Get NeoForge

  • Fabric

    player2npc-fabric-1.21.1-1.4.0.jar · 17 Jul 2026 · player2npc-fabric-1.21.1-1.4.0.jar

    Get Fabric

Most recently published release

player2npc-neoforge-1.21.1-1.4.0.jarrelease17 Jul 2026

player2npc-neoforge-1.21.1-1.4.0.jar · 1.1 MB · for 1.21.1 · NeoForge

Download this release
5baafa898181…
Older versions24
  • player2npc-fabric-1.21.1-1.4.0.jar17 Jul 20261.21.11.1 MB3 downloads092af783c0f5…Get
  • player2npc-forge-1.20.1-1.4.0.jar17 Jul 20261.20.11.1 MB3 downloads0d6ab0d7f004…Get
  • player2npc-fabric-1.20.1-1.4.0.jar17 Jul 20261.20.11.1 MB2 downloads06cb84b2b9ca…Get
  • player2npc-neoforge-1.21.1-1.3.0.jar17 Jun 20261.21.10.1 MB12.9k downloadsb7ff2ff16ff8…Get
  • player2npc-fabric-1.21.1-1.3.0.jar17 Jun 20261.21.10.1 MB2 downloadsdb8a0e40c4ed…Get
  • player2npc-forge-1.20.1-1.3.0.jar17 Jun 20261.20.10.1 MB2 downloads4a9f9378f962…Get
  • player2npc-fabric-1.20.1-1.3.0.jar17 Jun 20261.20.10.1 MB2 downloads621e8fc1c48e…Get
  • player2npc-neoforge-1.21.1-1.2.1.jar16 May 20261.21.10.1 MB240 downloadscace1b09b0a8…Get
  • player2npc-fabric-1.21.1-1.2.1.jar16 May 20261.21.10.1 MB2cab623bad34…Get
  • player2npc-forge-1.20.1-1.2.1.jar16 May 20261.20.10.1 MB154 downloads6beeb7b8cb93…Get
  • player2npc-fabric-1.20.1-1.2.1.jar16 May 20261.20.10.1 MB25ce2f9d2eaf…Get
  • player2npc-neoforge-1.21.1-1.1.8.jar6 May 20261.21.163 KB1.3k downloads636b79c4d199…Get
  • player2npc-fabric-1.21.1-1.1.8.jar6 May 20261.21.166 KB5cde5cfcf289…Get
  • player2npc-forge-1.20.1-1.1.8.jar6 May 20261.20.159 KB4f7601790b0e…Get
  • player2npc-fabric-1.20.1-1.1.8.jar6 May 20261.20.157 KB08063cbcdd56…Get
  • player2npc-fabric-1.21.1-1.1.7.jar28 Jan 20261.21.155 KB488 downloadse77aed18b98d…Get
  • player2npc-neoforge-1.21.1-1.1.7.jar28 Jan 20261.21.156 KB4322d2b431ac…Get
  • player2npc-forge-1.20.1-1.1.7.jar24 Jan 20261.20.155 KB3.7k downloadsfc866ccf39c5…Get
  • player2npc-fabric-1.20.1-1.1.7.jar24 Jan 20261.20.154 KB97646aa63331…Get
  • player2npc-neoforge-1.21.1-1.1.6.jar20 Nov 20251.21.154 KB15.1k downloads87c6cdeb5449…Get
  • player2npc-fabric-1.21.1-1.1.6.jar20 Nov 20251.21.152 KB2c7a72ebf6e7…Get
  • player2npc-forge-1.20.1-1.1.6.jar20 Nov 20251.20.152 KBa9ea211c3ae7…Get
  • player2npc-fabric-1.20.1-1.1.6.jar20 Nov 20251.20.151 KB593b76229ca6…Get
  • player2npc-fabric-1.21.1-1.1.5.jar16 Nov 20251.21.150 KB327 downloads788680301e69…Get

Frequently asked

Does Player2 AI NPC work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version Player2 AI NPC 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 Player2 AI NPC 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.

Which platform or loader does Player2 AI NPC support?

NeoForge, Fabric, 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 Player2 AI NPC?

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.

How do I install Player2 AI NPC?

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 Player2 AI NPC 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.

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Details from CurseForge, where the author last updated it on 18 Jul 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? .