I mostly hate those so-called 'slasher flicks' which feature a group of witless, narcissistic and dim-witted teenagers (or vapid 20 somethings) who go out into the woods and are picked off one by one by either a madman seeking vengeance or some restless supernatural entity. This one pretty much follows the formula except it's a rather good example of the genre. The acting isn't that bad and the pacing is really good. The campers all have distinct characters. Once you accept the premise that some kind of supernatural virus is on the loose in an isolated part the Outback which turns people into carnivorous predators you can watch the group try to work together to survive. Sometimes they get hysterical, and sometimes they do really stupid things but sometimes they actually make intelligent moves. In any case I was entertained.