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[Let's Do Addon] CompatMinecraft mod for 1.21.1

Adds compatibility for the Let's Do mods so you don't have to

server onlynewest supported 1.21.1AdventureGame MechanicsFood
Latest version
2.3.1-fabric
Minecraft
1.20.1 to 1.21.1
Java
Java 21+
Loaders
Quilt, NeoForge, Fabric, Forge
Licence
MIT
Downloads
2.2M
Updated
11 mo ago
Available on
Modrinth
Space NodeOur hosting

Host [Let's Do Addon] Compat servers

One click and [Let's Do Addon] Compat is installed with the right loader, on hardware built for it.

  • 1.21.1
  • Quilt
  • NeoForge
  • Fabric
  • 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 [Let's Do Addon] Compat declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1Quilt, NeoForge, Fabric, Forge21+declared8 Aug 2024
1.21NeoForge, Fabric, Forge, Quilt21+declared13 Jun 2024
1.20.1Fabric, Quilt, NeoForge, Forge17+declared12 Jun 2023

Download

From [Let's Do Addon] Compat’s own host. Nothing is re-hosted here.

2.3.1-fabricrelease4 Oct 2025

letsdocompat-fabric-2.3.1.jar · 0.0 MB · for 1.21.1

Download latest
b2487292e98a…
Older versions24
  • 2.3.1-neoforge4 Oct 20251.21.10.0 MB22678b7094de…Get
  • 2.2.4-forge28 Sept 20251.20.10.0 MB7423c333fcc1…Get
  • 2.2.4-fabric28 Sept 20251.20.10.0 MBca79014e0aac…Get
  • 2.3.0-fabric3 Sept 20251.21, 1.21.10.0 MBea122cfa4723…Get
  • 2.3.0-neoforge3 Sept 20251.21, 1.21.10.0 MBffe9339d6ff8…Get
  • 2.2.3-fabric21 May 20251.20.10.0 MB8cff987eaace…Get
  • 2.2.3-forge21 May 20251.20.10.0 MB023bd7a4d27b…Get
  • 2.2.2-fabric18 May 20251.20.10.0 MB25480faf9d02…Get
  • 2.2.2-forge18 May 20251.20.10.0 MB11887c80593c…Get
  • 2.2.1-forge17 May 20251.20.10.0 MBb3ade7576192…Get
  • 2.2.1-fabric17 May 20251.20.10.0 MBbdb214401ae4…Get
  • 2.1.0-fabric28 Feb 20251.20.10.0 MB1ac4652c90fd…Get
  • 2.1.0-forge28 Feb 20251.20.10.0 MBe9a8a6f19c4a…Get
  • 2.0.0-fabric29 Dec 20241.20.10.0 MBb8742e221df6…Get
  • 2.0.0-forge29 Dec 20241.20.10.0 MBb50fa3ff7692…Get
  • 1.4.2-fabric3 Jun 20241.20.10.9 MBeb55176bbc54…Get
  • 1.4.2-forge3 Jun 20241.20.11.0 MBdf149c93d095…Get
  • 1.4.120 Apr 20241.20.10.7 MB994d2dffad55…Get
  • 1.4.01 Apr 20241.20.10.5 MB8f6847ff000c…Get
  • 1.3.01 Apr 20241.20.10.6 MB57f0157dbb0c…Get
  • 1.2.030 Mar 20241.20.10.4 MBb6293b7b140d…Get
  • 1.1.227 Mar 20241.20.10.3 MB3b3b9ca1e23b…Get
  • 1.1.127 Mar 20241.20.10.3 MB85bb0ce18189…Get
  • 1.1.027 Mar 20241.20.10.3 MB85bb0ce18189…Get

Frequently asked

Does [Let's Do Addon] Compat work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version [Let's Do Addon] Compat 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 [Let's Do Addon] Compat 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 [Let's Do Addon] Compat on the client or the server?

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

Which platform or loader does [Let's Do Addon] Compat support?

Quilt, 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 [Let's Do Addon] Compat?

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 [Let's Do Addon] Compat 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 [Let's Do Addon] Compat?

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 [Let's Do Addon] Compat 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.

BookshelfAn open source library for other mods!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+)

Last checked 2 mo 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? .