Thank you.
That will be about $ 20.
There are no plans to add multiplayer as it is technically difficult.
Another question are you going to add mod support.
If not then can you change the scripting backend from IL2Cpp to mono. https://docs.unity3d.com/2018.3/Documentation/Manual/windowsstore-scriptingbacke...
Because IL2Cpp makes it really difficult to make mods.
(I am trying to make a multiplayer mod)
I have cancelled the multiplayer mod. because the game is not really made for multiplayer (you have to basically rewrite everything except the physics).
I have made a lib for making it easier to develop mods for Primitier https://github.com/Xgames123/PrimitierModdingFramework.
multiplayer mod is back in development
https://github.com/Xgames123/PrimitierMultiplayerMod
It is not really usable at the current stage
Here is a demo video