Question:
Is this your first project on Game Maker...?
Honestly, I've been on the Game Maker/RPG Maker/Sphere/etc. communities too long to believe that every game that people advertise will come out. First off, I hate feeling bad when the maker decides to finally cancel their project, because I expected so much from it, but I also hate the fact that some of these games are made by complete amateurs. Please don't take me the wrong way; I understand these communities are somewhat unfair when it comes to people making their first game. I have made dozens of games. I have made dozens of demos that never made it out to be finished. I, like you, posted these demos on the respective maker's forum, and got pretty much the same responses you are getting.
The worst part is, I also, received no constructive criticism.
All I can tell you is this: If you honestly feel that you can accomplish this on Game Maker, then you should. However, if you are a novice, please, please don't be like me. Don't try to make a Bomberman adventure game on RPG Maker (like I did) with 1, 000 hours of game play. Because unless you are truly famous (which I can see, you aren't), you will probably not go very far.
I have stopped game making for recognition. I no longer show off my games on forums or game making sites unless I have finished with them. I still enjoy game making, and still do it as a hobby, and I do try to be as professional as I can be, because only then will I get better. But I don't expect to go anywhere great.
Please don't be like me. Be smarter than me.
And be lucky this isn't even a game maker forum, as most people in here don't know what it means to create a game, even a 2-D one by yourself.