I'm proud to present NEON STRUCT's first major update today, including a level editor, Steam Workshop support, and an official expansion: The Dulce Archives.
https://youtu.be/OgG5wbUClF8
The Dulce Archives is available on the Workshop here:
http://steamcommunity.com/sharedfiles/filedetails/?id=499889221
Level editor documentation is available as a Guide here:
http://steamcommunity.com/sharedfiles/filedetails/?id=531913138