Unlock hidden features by starting with parameters:
wooow! DEPECHEc!

(wooow! = demo/executable name)

Explanation of the parameter(s):
DEPECHE: Keep pressing fire on joystick -> background color indicated unconsumed time
c: Number of max bobs to draw (min 32, max 100) -> c = ASCII value 99
!: Enable user mode -> Press right mouse button to control 3D transformation with mouse

General: Long left on joystick enters hidden zone