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Minecraft b1.8.1

Beta era, 2010–2011 — before 1.0. Version facts below are read from Mojang’s own files — the official manifest plus the version.json inside the jar.

Contents (3)
  1. What changed in b1.8.1
  2. Version facts
  3. Neighbouring versions

Java What changed in b1.8.1

Everything below is measured by comparing the game files of b1.8 with b1.8.1 — not copied from patch notes.

Minecraft did not ship a data generator until January 2018, so there is no registry of blocks and items to compare for a build this old. What is below is read from the game’s own client.jar: the text the game displays, and the textures, models and sounds it ships. New blocks and items almost always show up in both.

Nothing in the game’s text or asset files differs from the previous build — whatever changed here was in the game code, which is not something these files can show.

Version facts

EditionJava Edition
TypeOld Beta
Release date18 September 2011
Minimum Java versionJava 8
Asset indexpre-1.6
Client jar1.9 MB sha1 6b562463ccc2…
Previousb1.8
Next1.0
Official metadatab1.8.1.json
PlatformsWindows macOS Linux
Written inJava
DeveloperMojang Studios