Handulum+ Hey StuffedWombat, I teach AP Physics to high school students. (I use newgrounds for posting music I've created.)
I just wanted to let you know that I love your game engine here. I think that it provides a great hands on way of teaching some properties about the motion of pendulums.
I'll be passing this onto my students and using it in class.
Keep up the good work, looking forward to see what you decide to make for your next project.
J-J-Jump