MarkoH01: Harsh requirements? I did not know. I mean, they have a quality check for everything but now I am curious what requirements these could be ... but I guess you are not allowed to talk about those.
But if you have to release on steam please do it DRM-free.
KneeTheCap: https://www.gog.com/indie If you scroll down you can see their faq that lists the requirements :D
I read all of them and except from the part with "RPG Maker games are more difficult because we have so many" I don't see much that is not fulfilled with this game. It IS unique and it is engaging. GOG has accepted several games that are nothing more than a walking simulator but give an exceptional experience. This would fit perfect imo. The FAQ also seems to be outdated:
"I am the publisher of a big F2P title - can I get it onto GOG?
Right now GOG does not distribute free to play titles, or any titles with a microtransaction payment system."
Not true anymore as we all know ;)
Anyway - you should at least TRY to get it on GOG. This game is really something and the narrative with all those flashbacks and dream sequences (or not . who knows) really makes this unique.