Nice concept, that's about it

Rating: 5/10 (10 December 2013)

In all seriousness, I love this concept. I mean, I, myself was conflicted about the Purge thing. Because in the movie they say it's effective. Crime goes down, as does poverty. But then again, that's probably because the poor and criminals get killed first. But it is true that we are spiteful vengeful violent beings by nature.
That being said, the movie is pretty much rubbish. It starts out okay, but as soon as the stranger is in their house, it gets boring. Tension is forced by music and lighting while it's not that scary or tense. Once the family catches the stranger, the hardest part for them should be over. Yet that's the moment they start bickering over "what they're doing is wrong". I'm pretty sure that anyone realistic would just turn him in. They would feel bad about it, but their survival instinct is greater than that.
The dialogue is cliché and not entertaining, the lighting has been done before,
To conclude: 3 points for concept, 2 for the rest.