Please use Timeless instead!

Timeless includes OldWorldMenu, has more features, and will be kept up to date. I will stop updating OldWorldMenu as an independant mod and will keep my focus on Timeless from now on.

Original Description:

This mod bring back the old Create New World menu on modern versions. If you, like me, don't like the new Create New World menu, you'll like this mod. This mod requires any version of Fabric API and requires Minecraft 23w06a or later.