Equation of stock trading simplified to game of moving resizing balls
...Think of it as a 2d seesaw surface that never tilts because the masses of balls are adjusted to always balance.
This is the early start of a game based on that econ theory. Econ is boring in number and symbol form, but as a realtime game its more like dancing.
Building controls often have a PID Loop (Proportional Integral Derivative). Adjust PI&D terms in realtime and visually see what the reaction to the system will be. This is a real-time simulator with speed adjustment. Software requires the old MS Java Machine to run.
Interested in an updated desktop version? Please drop me a note in the forum or my blog: http://right-handed-monkey.blogspot.com/