Thank you!
The finished version will be released on Itch along with Steam. As for keeping it compatible with Windows 7 and older OSes, I will try my hardest to do so, however the game may eventually be ported to GMS2 which may or may not have older OS compatibility.
I do like that people who are still using ancient operating systems and extremely low specs can play the game and have a good time, fewer and fewer games try to have that.