This is my first program for the GP2X.  It features balls bouncing around the screen.  It will run noninteractively, but controls are available if you want them.  Start = Quit, Select = Slow Mo, Joystick = Gravity.  The balls bounce off each other and the walls elastically, with integrated wall collisions and discrete-time ball collisions.  The background plasma was the only effect I could get to work without hurting the framerate too much.

-- Sparr
sparr0@gmail.com