How to Make a (Slow Parent Inverse) in blender 3D GE

Hi guys, I a Brazilian Game creator and my English is a bit bad…
I a have a small question, how to make a slow parent inverse in Blender 3D, I’m doing a FPS Game ( First Person Shooter ) and I can not create this script, I researched, but i not found this, please help me guys.
I’m on-line in Skype every days : Trustsoftwares

slow parent the camera. everything will seem faster than you in comparison?