The Oscars are swell, but once in a while a film comes along that is so courageous it deserves consideration for the Nobel Prize. An entire generation has been born and gone to college since the Beastie Boys defined that most basic of civil liberties: You've got to fight for your right to party. The makers of Project X, knowing how short the teenage memory is, have now boldly, raunchily made the declaration again...
—Neil Genzlinger New York Times
...a mangy teenage house-party bacchanal...
—Owen Gleiberman Entertainment Weekly
...a game-changing instant classic...
—Peter Debruge Variety
...having experienced far too many teenager coming-of-age films in which there are almost no consequences the night after somebody throws a party that spirals out of control, there's something refreshingly twisted about a movie in which the destruction is epic, and the consequences are harsh, at least for some.
—Richard Roeper Chicago Sun-Times
...the movie equivalent of that good-looking, well-off teenage boy your gut tells you to keep away from your teenage daughter.
—Roger Moore Chicago Tribune
It's crude in every sense: The film looks like shit, the characters are boors, and it's as sloppily put-together as the home movie it pretends to be.
—Keith Phipps Onion AV Club
...would be every parent's worst nightmare if it weren't so inane.
—Claudia Puig USA Today
A grimly depressing, glumly unfunny teensploitation comedy about an epic all-night party that devolves into anarchy...
—Todd McCarthy Hollywood Reporter
You're going to hate Project X -- that is, if you're over 30.
—Bill Gibron filmcritic.com