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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 release 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
13 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.

For Minecraft 1.21.1

Choose the loader you use before downloading.

  • Fabric

    2.3.1-fabric · 4 Oct 2025 · letsdocompat-fabric-2.3.1.jar

    Get Fabric

  • NeoForge

    2.3.1-neoforge · 4 Oct 2025 · letsdocompat-neoforge-2.3.1.jar

    Get NeoForge

Most recently published release

2.3.1-fabricrelease4 Oct 2025

letsdocompat-fabric-2.3.1.jar · 26 KB · for 1.21.1 · Fabric

Download this release
b2487292e98a…
Older versions24

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?

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 [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. 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 Modrinth, where the author last updated it on 4 Oct 2025. 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? .