Ananova:

A German toymaker has released a kinky version of the children's card game Top Trumps.

The card game compares the merits of different sexual positions.

The game, called Kult Quartett in Germany, is based on the old schoolyard card game where players compare different aspects of cars, planes or tanks to win.

It measures five different criteria for each sexual position - HER Fun Factor, HIS Fun Factor, Injury Risk, Backseat Potential and Porn Factor.