Compatibility
What works with Minecraft 1.3.1
Released 31 Jul 2012. Everything below comes from the projects' own published data, and each row says how we know.
Java requirement
Java 8 or newer
Published by Mojang for this exact version. An older runtime will not start it. Get a verified build.
Server software with builds
Real, downloadable builds for 1.3.1.
| Software | Build | Published | Size | Checksum | Download |
|---|---|---|---|---|---|
| Legacy Fabric | #72 | 28 Jul 2026 | 0.2 MB | Not published | jar ↗ |
| NanoLimbo | #1 | 13 Nov 2021 | 2.1 MB | Not published | jar ↗ |
Mod loaders
Support declared in each loader's own metadata.
- NanoLimbo1.3.1inferredsupported
- Legacy Fabric0.19.3inferredsupported
Clients that can join
Protocol 39 is shared with these versions, so they can connect without a translation proxy.
Frequently asked
Which Java version does Minecraft 1.3.1 need?
Java 8 or newer. Mojang publishes this requirement in the version metadata, so an older runtime will refuse to start the server.
Which Minecraft versions can connect to a 1.3.1 server?
Any client speaking protocol 39: 1.3.2. Versions with a different protocol number need a translation proxy such as ViaVersion.
Which server software supports 1.3.1?
Legacy Fabric, NanoLimbo publish builds for 1.3.1.