Minecraft 23w13a_or_b

SnapshotLegacy 1.xApril Fools

Minecraft 23w13a_or_b is a Java Edition snapshot released on 1 Apr 2023 under the classic 1.x numbering. Mojang lists Java 17 as the required runtime. It was released as an April Fools joke and was never part of the main development line.

Released: 1 Apr 2023
Requires Java: Java 17+
Protocol version: Unknown
Data version: Unknown
Version group: april-fools
Numbering: Legacy (1.x)
Server software: 0 with builds
Position: #682 of 903

Official downloads

Served by Mojang. Verify the checksum before running anything.

File	Size	SHA-1	Download
Server jar	45.8 MB	`6241fc14ce7a…`	piston-data.mojang.com ↗
Client jar	23.4 MB	`8ebf103ef3c4…`	piston-data.mojang.com ↗

The catalogue on 23w13a_or_b

Projects that name 23w13a_or_b in their own release metadata. Follow any of these to the full filtered list.

What runs on 23w13a_or_b

Builds are counted from each project's own API; declared support comes from the loader's metadata.

Full compatibility

Software	Latest build	Published	Checksum	Download
Fabric Loader	0.19.3	Not build based	declared	loader
Quilt Loader	0.30.1-beta.2	Not build based	declared	loader

Everything in april-fools

9 versions in this group.

Filter list

Version	Type	Protocol	Released
26w14a	Snapshot	1073742129	1 Apr 2026
25w14craftmine	Snapshot	1073742068	1 Apr 2025
24w14potato	Snapshot	1073742007	1 Apr 2024
23w13a_or_b	Snapshot	Unknown	1 Apr 2023
22w13oneblockatatime	Snapshot	1073741901	1 Apr 2022
20w14infinite	Snapshot	709	1 Apr 2020
3D Shareware v1.34	Snapshot	Unknown	1 Apr 2019
1.RV-Pre1	Pre-release	Unknown	31 Mar 2016
15w14a	Snapshot	48	1 Apr 2015

Questions about Minecraft 23w13a_or_b

What Java version does Minecraft 23w13a_or_b require?

Minecraft 23w13a_or_b requires Java 17 or newer. Mojang publishes this in the version metadata, so an older runtime refuses to start it.

Where do I download the Minecraft 23w13a_or_b server jar?

Mojang hosts it directly. This page links to the official file with its SHA-1 checksum and size, so you can verify the download before you run it. We do not mirror or repackage it.

Go deeper

Full compatibility for 23w13a_or_bServer software, loaders and the Java requirement in one place Java 17 downloadsVerified Temurin builds for Windows, macOS and Linux Everything in april-foolsSnapshots, pre-releases and candidates in this group How Minecraft version numbers workWhy 1.21 was followed by 26.1, and what happened to 1.22

Metadata from Mojang’s official version manifest. Protocol and data versions from the PrismarineJS minecraft-data project.