Minecraft World Generator Update


Jen Bergensten gave us an update on the world generator changes that the Minecraft team have been working on. The last time there were any major changes to the generator was back in March 2012, when the jungle biome was added.

One reason why we rarely do changes to the world generator is because every little change off-sets the world seed and causes noticeable borders between new and old terrain. A lot of people don’t mind about these borders, but we still want to avoid creating them. So, in order to avoid needing to change the world generator again in the nearest future, we try to do as many changes now as possible.
— Jens Bergensten, Minecraft

There have been three main problems Monjang wanted to address:

  • Too large oceans
  • Too uneven/random biome placement
  • Not enough variation

The solution to these problems have been,

  • Tweaks to add more islands and checks to avoid huge oceans
  • Biomes have been put into four main categories: snow-covered, cold, medium, and dry/warm. Biomes will avoid getting placed next to a biome that is too different to itself (sometimes this still happens, but it’s very rare now and not all over the place)
  • Added a whole bunch of new biomes…
  • … and most biomes have uncommon/rare variations that you may run into
  • Added a bunch of new terrain features, such as new flowers and trees

Jens then released 2 maps, one from 1.6 (left) and one from 1.7 (right) to show the difference in biomes. The scale of these maps is 16384×12288 blocks. Let us know your thoughts in the comments below.