Having seen the previous Riddick films i had to buy this one, i was not disappointed. This latest offering was as good if not better than Pitch Black as before it features Riddick against all comers and there's plenty of them!! It has a proper story with a beginning, middle and end with more action than the average person could handle. It is a stand alone film and does not rely on the viewer having seen the others although if you haven't seen them this will make you want to. I would thoroughly recommend anyone to watch it and, as i have done, watch it again the next day.