I see that you are using game maker, I use that too. My friend and I made 2 games with game maker for college projects. The first one was similar to yours where you could change gravity, but it was a platformer. We started making a really cool new game but game maker was giving us too many problems, so we are starting over in python and are still working on it.
I really like your game. I got pretty into it after a few levels. I would add some background music to break the silence. You have a few glitches, such as if you move the cursor through a wall too quickly while puling back the ball it gets "stuck". And if two balls hit each other they don't really react realistically. Oh and what does the building in the beginning have to do with it?
Keep at it and keep sending updates, game maker can be a bitch at times but your making something really cool!
Platinums: Red Dead Redemption, Killzone 2, LittleBigPlanet, Terminator Salvation, Uncharted 1, inFamous Second Son, Rocket League
