This would've been a much better movie if the producers and casting director hadn't decided to go with the same old, same old, same old, tired primary cast of vapid, useless, 20-something characters that we see in so many genre films. The horny couple that can't keep their hands off each other, the geek, the bubbly blonde, the one with DEEP ISSUES (usually a chick, but in this case a male). Oh, and one of them, of course, has rich entitled parents that conveniently provide the plot point that they all get to hang out at a luxurious getaway out in the woods. None of them have any justification whatsoever to enjoy the lifestyle that they do, but here we are. Is it so impossible to make a sci-fi/horror/thriller film featuring real, adult characters?