Minecraft Java Epochs Timeline

Explore the timeline of world-generation epochs in Minecraft Java. Each epoch spans a range of Java versions where seed outcomes and terrain generation remain broadly consistent. Major updates to terrain, biomes, structures, and world height mark the beginning of new epochs. This community-sourced classification helps players identify which seeds remain compatible between versions.

An epoch is a period of time where Minecraft’s world-generation algorithm stays stable.

Whenever Mojang makes a significant change to terrain noise, biome distribution, or structure placement, a new epoch begins. Seeds created within the same epoch will always generate identical worlds, while seeds between epochs will produce entirely new landscapes—even if the seed number is the same.

Each epoch entry below explains what changed and links directly to the game versions it covers. This helps players understand which seeds remain compatible and how world-generation evolved across updates.