Proxycon was one of the graphics demos that made up Futuremark's 3DMark benchmarking suite for portable devices such as mobile phones. It was the most complex of the demos and was written to the OpenGL ES 1.1 API.
http://www.futuremark.com/download/files/video/3DMarkMobile06_Proxycon_640x480_ed.wmv
The most powerful portable device tested by Futuremark using 3DMarkMobile ES 1.1 was the Nokia N93 phone, able to run Proxycon at over 30 frames per second.
http://www.nordicwirelesswatch.com/wireless/story.html?story_id=5052
http://futuremark.com/bdp/certified/nokia/