Past days I've meet a problem with my GMS2, that's stops me during my development:
I changed my PC, during the installation of GMS2, C++ wasn't installed. I've fixed the problem but now I'm late! Now I can dev in peace! Sorry for that!
The game is processing very well. I'm sure that I'll be able to put a demo in a few months. Just be patient, I set a date for 2-3 months to put a stable "pre-alpha demo". It will be free, the game'll pay when it comes out in full and final version.