...Monsters is a dynamite little film, loaded with atmosphere, intelligence, beauty and courage. It echoes lots of other movies, but it isn't quite like anything else you've seen this year, or last year, or the one before that. I mean that roughly 98 percent in a good way.
—Andrew O'Hehir Salon
...impresses thanks to the lead actors' performances and [director] Edwards' skilled efforts.
—Clark Collins Entertainment Weekly
...makes its own distinct impression thanks to a finely tuned attention to atmospheric detail over broad sci-fi sensationalism.
—Michael Rechtshaffen Hollywood Reporter
...a sharp little low-fi monster movie...
—Michael Phillips Chicago Tribune
...both a testament to what the latest technologies allow filmmakers to do, and -- on the downside -- a testament to the enduring importance of a good script.
—Noel Murray Onion AV Club
Borrowing the handheld lensing and easy pace of a low-budget character piece, director Gareth Edwards, a CGI artist by trade, has created a dystopian landscape that's so naturalistic, it's uncanny. As a writer, he's a less successful realist, resorting to some pretty hoary contrivances to get and keep his boy and girl in the same space for the film's duration, and the largely improvised post-mumble performances don't add much depth.
—Karina Longworth Village Voice
...an attempt to counter noisy, hyper effects-laden alien invasion flicks with something teasing, indie and good for you. Instead, it's like a pendulum swing too far in the other direction.
—Robert Abele Los Angeles Times
Monsters had the potential to be smarter, boundary-pushing science fiction along the lines of District 9, but with its underdone characterization and critical failures of imagination, it barely manages to meet the low standards of Cloverfield.
—Chris Barsanti filmcritic.com
... a transparent fusion of Cloverfield and District 9 that posits its alien-invasion tale as a parable about illegal immigration.
—Nick Schager Slant Magazine
...lamely acted and slackly directed...
—Lou Lumenick New York Post