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APTweaks: Spawn (11.x Classic)Minecraft mod for 1.21.1

Optimization for monster spawn events and spawner.

server onlynewest supported release 1.21.1UtilityOptimization
Latest version
11.6.1
Minecraft
1.18.2 to 1.21.1
Java
Java 21+
Loaders
NeoForge, Forge
Licence
MIT
Downloads
93.0k
Updated
8 mo ago
Available on
Modrinth
Space NodeOur hosting

Host APTweaks: Spawn (11.x Classic) servers

One click and APTweaks: Spawn (11.x Classic) 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

Minecraft versions

Every version APTweaks: Spawn (11.x Classic) 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
1.20.6Forge, NeoForge21+declared29 Apr 2024
1.20.4NeoForge, Forge17+declared7 Dec 2023
1.20.3NeoForge, Forge17+declared4 Dec 2023
1.20.2NeoForge, Forge17+declared20 Sept 2023
1.20.1Forge, NeoForge17+declared12 Jun 2023
1.20NeoForge, Forge17+declared2 Jun 2023
1.19.4NeoForge, Forge17+declared14 Mar 2023
1.19.3Forge, NeoForge17+declared7 Dec 2022
1.19.2NeoForge, Forge17+declared5 Aug 2022
1.19.1NeoForge, Forge17+declared27 Jul 2022
1.19NeoForge, Forge17+declared7 Jun 2022
1.18.2NeoForge, Forge17+declared28 Feb 2022

Download

From APTweaks: Spawn (11.x Classic)’s own host. Nothing is re-hosted here.

Most recently published release

11.6.1release10 Mar 2026

adaptive_performance_tweaks_spawn_1.21.1-11.6.1.jar · 0.1 MB · for 1.21.1 · Forge

Download this release
70848cd9c9a2…
Older versions8
  • 11.6.03 Mar 20261.21.10.1 MB42 downloadsc5a0b7c894d9…Get
  • 11.5.028 Aug 20251.21.10.1 MB783 downloadsb801e6493a1a…Get
  • 11.4.027 Aug 20251.21.10.1 MB50 downloadse54b7842f2a2…Get
  • 11.3.015 Oct 20241.21.10.1 MB1.7k downloadsa2836986d89b…Get
  • 11.2.07 Oct 20241.21.10.1 MB207 downloadscce325ee5dfb…Get
  • 11.1.014 Jul 20241.210.1 MB401 downloads3c8e8c7f770d…Get
  • 11.0.119 May 20241.20.60.1 MB1.0k downloadse99eed846e70…Get
  • 11.0.019 May 20241.20.40.1 MB220 downloads25148173b588…Get

Frequently asked

Does APTweaks: Spawn (11.x Classic) work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version APTweaks: Spawn (11.x Classic) 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 APTweaks: Spawn (11.x Classic) support?

Everything the author has declared, from 1.18.2 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 APTweaks: Spawn (11.x Classic) on the client or the server?

The server only. Players join with an ordinary Minecraft client and install nothing.

Which platform or loader does APTweaks: Spawn (11.x Classic) 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 APTweaks: Spawn (11.x Classic)?

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 APTweaks: Spawn (11.x Classic) under?

MIT, 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 APTweaks: Spawn (11.x Classic)?

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 APTweaks: Spawn (11.x Classic) 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!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+)Collective🎓 Collective is a shared library with common code for all of Serilum's mods.

Details from Modrinth, where the author last updated it on 10 Mar 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? .