FLUX

This was actually my first physics game, so I'm still figuring out Game Maker's physics engine.  I could be wrong, but I don't believe there are any drag and drop functions for physics within Game Maker, so I had to code it by following tutorials online.   Much of it is kind of handled automatically by just adjusting various physics parameters associated with each object (density, linear dampening, restitution, friction, and such).  The tough part is knowing how to move physics objects as you can no longer simply assign a direction or gravity.  Things are moved through forces and impulses.  I had wanted to add more obstacles like spikes along the sidewalls, but ran out of time for the jam as I was spending much of the time learning instead of making progress.  It is neat what it can do though.  I particularly liked the crate explosions.