Hello, I intend to make a minimalistic "not"game explaining my thoughts and personal experience on the matter of self-isolation, using the mechanics of the gameplay as the narrative itself. I'll proceed to explain the main concept and mechanics of the game, but I wont go into deep detail because spoiling the entirety of the mechanics, in this case would be spoiling the narrative, and right now I want to be as secretive as i can with it. At the end of the post I'll ask for your advice in different matters about it:

First of all, I got HUGELY inspired by Jordan Magnuson's Loneliness, so as for now, the visuals and main mechanic (moving from point A to point B in a straight way) will be based on that, but i'm completely open to suggestions about how I can make this better or more original.

The game would be titled Isolation, but i'm still not totally happy with that name.
The user would be a 10x10mm black square, which would move in a vertically scrolling screen, populated by other squares, some bigger, and some smaller.
The player's square would interact with the others by being repelled or attracted to them.
The player's square will be able to change sizes depending on the interactions with the other squares.
At some point in the game (it will be fairly short, lasting an average of 3-4 minutes), some of the other will start changing their colors.
The game will have several endings (5, 6 counting "death/lose" as an ending) depending on how the player plays it.

Now, I would like to ask you to tell me what you like about the concept, or what you would change about it, if it's too dull, tell me, or if you want me to be more specific about the mechanics tell me, and I'll PM you about them; I even have some pencil sketches that I can send to you once I translate them from Spanish.

The hard part: I know some things about programming, I can manage with the basics of C++, C#, and Java, and am going to learn Flash and some AS in the next few months; but I don't really know how to graphically represent what I want to show to the player: What libraries should I use, and how do I employ them? How can I simulate the "physics" of attraction and repulsion? How do I change the colors and sizes of the figures I'm displaying?

Thanks in advance to everyone who reads and who replies; I intend to publish the game on Newgrounds and similar media once it's done.