This is a beta version of the core module
and using it will break your existing gameplay
Mod content: a shovel, and some gameplay UI, some creatures
There is a feature that generates dirt clods underground that can be dug into with a shovel.
However, due to the heavy workload, there is no content that can be really played in the dug cave at present, including other content, which is not really perfect.
So please wait until it is finally perfected before using this mod.