Larvita 3 Game Engine
This game engine is the precursor of Godot Engine developed by Ariel Manzur and Juan Linietsky. It was used for a couple of games and prototypes, most notably (Atmosphir)[https://www.youtube.com/watch?v=DvQsmPC27VU].
I have no idea, please update instructions. I think it went something like:
scons bin/script_exec
The editor is written in Lua (this is a Lua game engine). You open the editor like this:
cd bin
script_exec editor
To execute games:
script_exec game_folder
Games are implemented by inheriting SceneMainLoop from Lua, then doing whathever you want.
There is none.
Our previous engine was called "Larvotor" (used for Regnum Online). This was originally a 3D engine aimed to run on the Nintendo 3DS, hence the name "Larvita" (Larvita 1 was a prototype engine for that platform). Life happened and we ended up getting to work for clients wanting to make PC games.
An explanation of Larvita 3 design and how we moved from it to Godot can be read here.