There has been a few improvements :). Mainly there is now a prototype of the player house and there is also a time cycle (with minutes, hours, days). I also rewrote completely the script to manage interactive objects (items, doors, etc) to be more robust.

Now player data is persistent when moving from one level to the other.

To answer a few questions:

    You cut the skill tree in purpose? We want to see more! :p

This is on purpose to cut down the amount of features. I would rather have something playable than to many ideas that go nowhere. If I_implement the skill tree shown I can then think about the future :)

I am curious, what information do you use to create the shadows for trees?

This is so far vanilla Godot with some custom shaders and scripts.

I remember seeing this article about some of the tricks used in Graveyard Keeper

The technique used in Encyclopedia Hortica Botanica is similar :).

I'd echo pvigier's suggestion to post the code! All the better to get feedback and participation.

I am preparing the code to be released. There is a few things to clean up, It would be helpful if another programmer can help me since doing all the design decision alone is hard.