Critical response
Zombieland received positive reviews from critics. On Rotten Tomatoes the film has an approval rating of 89% based on reviews from 259 critics, with a rating average of 7.4/10. The website's consensus reads: "Wickedly funny and featuring plenty of gore, Zombieland is proof that the zombie subgenre is far from dead." On Metacritic, which assigns a weighted average rating to reviews from mainstream critics, the film holds a score of 73 out of 100 based on 31 reviews, indicating "generally favorable reviews". Audiences surveyed by CinemaScore during the opening weekend, gave Zombieland an average grade of "A−" on an A+ to F scale.
Roger Ebert was surprised by Zombieland's ability to be significantly humorous while zombies remained the focus of the film, and felt that "all of this could have been dreary, but not here. The filmmakers show invention and well-tuned comic timing". He credited Bill Murray's cameo appearance as receiving the "single biggest laugh" of the year and gave the film 3 out of 4 stars.
Murray's cameo was called out for attention by other reviewers: Marc Savlov of the Austin Chronicle credited it as "the single most outrageously entertaining unexpected celebrity cameo of any film—genre or otherwise—" that he had seen in a "long, long time" and that while the film did little to advance the genre, its smart script and high action made it very enjoyable. Savlov categorized Zombieland as being "dead set against being dead serious" with its tonal pallor "ha[ving] more in common with a foreshortened It's a Mad, Mad, Mad, Mad World than with 28 Days or Weeks Later".
The film's witty use of dialogue and popular culture was also praised by Ty Burr of The Boston Globe, who said the film "makes no claims to greatness", but that what it "has instead—in spades—is deliciously weary end-of-the-world banter".
Michael Ordona of Los Angeles Times praised director Fleischer for "bring[ing] impeccable timing and bloodthirsty wit to the proceedings".
Some reviewers saw deeper levels in the plot and cinematography; cinematographer Michael Bonvillain was praised for capturing "some interesting images amid the postapocalyptic carnival of carnage, as when he transforms the destruction of a souvenir shop into a rough ballet", while Stephanie Zacharek of Salon.com said, "the picture is beautifully paced" and highlighted "a halcyon middle section where, in what could be viewed as a sideways homage to Rebel Without a Cause, our rootless wanderers share a brief respite in an empty, lavish mansion".
Claudia Puig of USA Today said, "underlying the carnage in Zombieland is a sweetly beating heart", and, "This road movie/horror flick/dark comedy/earnest romance/action film hybrid laces a gentle drollness through all the bloody mayhem". Entertainment Weekly's Lisa Schwarzbaum concluded, "At the bone, Zombieland is a polished, very funny road picture shaped by wisenheimer cable-TV sensibilities and starring four likable actors, each with an influential following".
Josh Levin of Slate drew parallels with Adventureland: in both films, Jesse Eisenberg tries to win over his dream girl, a girl who has been hardened by life, and both feature a theme park. He goes so far as to call the film "an undead Adventureland—a Pride and Prejudice and Zombies for the Facebook generation".
Time's Richard Corliss described the film as "an exhilarating ride, start to finish" and reasoned "Edgar Wright and Simon Pegg set a high bar for this subgenre with Shaun of the Dead, but Reese, Wernick, and Fleischer may have trumped them". "This isn't just a good zombie comedy. It's a damn fine movie, period. And that's high praise, coming from a vampire guy", he stated.
Not all comparisons with Shaun of the Dead were favorable: Joshua Rothkopf of Time Out New York characterized the "extra injection of pop-culture neuroticism" as "the one innovation" of the film, declaring that while Zombieland was funny, it was not particularly scary and stated that it "simply isn't as witty as Shaun of the Dead, forever the yuks-meet-yucks standard".
Similarly, The Globe and Mail's Rick Groen said "It's far more charming than chilling and way more funny than frightening", though he suggested that Rule No. 32 to 'enjoy the little things' was worth observing for a light comedy.
Manohla Dargis of The New York Times classified the film as "[a] minor diversion dripping in splatter and groaning with self-amusement" and lamented the lack of a real plot more concrete than a series of comedy takes on zombie-slaying.
Rotten Tomatoes lists the film on its 100 Best Zombie Movies, Ranked by Tomatometer.