Compatibility
What works with Minecraft 21w40a
Minecraft 21w40a needs Java 16 or newer. Released 7 Oct 2021. Everything below comes from the projects' own published data, and each row says how we know.
Java requirement
Java 16 or newer
Published by Mojang for this exact version. An older runtime will not start it. Get a verified build.
Server software
No server software in our catalogue has published a build for 21w40a. For a test version that is normal: server projects usually wait for the full release.
Mods, plugins and packs for 21w40a
Counted from each project's own release metadata. Nothing is guessed from a filename.
Popular mods on 21w40a
The most downloaded mods that declare this version.
- Fabric APIready
- Fabric Language Kotlinready
- Euphoria Patchesready
- More Cullingready
- MidnightLibready
- Concurrent Chunk Management Engineready
- Memory Leak Fixready
- CustomSkinLoaderready
- Chisel Rebornready
- Cull Leavesready
- Zumeready
- WI Zoomready
Popular plugins on 21w40a
The most downloaded plugins that declare 21w40a.
Popular resource packs on 21w40a
The most downloaded resource packs that declare 21w40a.
Popular shader packs on 21w40a
The most downloaded shader packs that declare 21w40a.
Popular data packs on 21w40a
The most downloaded data packs that declare 21w40a.
Mod loaders
Support declared in each loader's own metadata.
- Quilt Loader0.31.0-beta.4declaredsupported
- Fabric Loader0.20.1declaredsupported
Frequently asked
Which Java version does Minecraft 21w40a need?
Java 16 or newer. Mojang publishes this requirement in the version metadata, and an older runtime will refuse to start the server.
Which mods work with Minecraft 21w40a?
64 mods in our catalogue declare 21w40a in their own release metadata, including Fabric API, Fabric Language Kotlin, Euphoria Patches, More Culling, MidnightLib. Each still has to match your loader.
Which server software supports 21w40a?
No server software in our catalogue has published a build for 21w40a yet.
Is this information wrong or missing something? .