AceShowbiz - This Is Not a Test is Shudder’s latest R-rated zombie horror film, adapted from the popular young adult novel by Courtney Summers. The movie, which stars Disney alumna Olivia Holt, has recently premiered in theaters on February 20, 2026, but early responses from critics have been underwhelming, reflected in a 41% rating on Rotten Tomatoes based on 22 reviews.

This Is Not a Test centers on a group of high school students forced to fight for survival during a zombie apocalypse, mirroring the coming-of-age themes of Summers’ original novel. Despite the source material’s popularity, the film adaptation struggles to captivate critics who feel the zombie genre itself has grown stale and that this movie adds little innovation or freshness to the familiar narrative.

Directed by Adam MacDonald, the film has faced criticism for its technical execution, with many reviewers pointing out a lack of cinematic polish that hampers the story’s ambitious intentions. While some acknowledge the effort to blend zombie horror with a deeper exploration of trauma and ethical survival dilemmas, most agree the film falls short of delivering a coherent or impactful message. The supporting cast, according to reviews, generally fails to match the level of Olivia Holt, who receives praise for her performance.

ScreenRant’s own review highlights Holt as a standout, stating she "beautifully delivers the genre candy in the form of visceral screams and trembling vulnerability." However, the review echoes the broader consensus that the film does not fully succeed in its ambition to explore new ground within zombie horror. It notes, "The film circles around heavy themes of trauma and survival ethics without landing on a coherent stance," and questions what viewers are meant to take away beyond "stylish blood splatter and a sharp punk-rock soundtrack."

Some positive critiques appreciate the attempt to merge horror elements with coming-of-age drama, yet even these admit that the film's various components don’t quite come together effectively. The movie’s runtime is 102 minutes, and it was written by Adam MacDonald alongside Courtney Summers, with Cybill Lui and MacDonald serving as producers.

In summary, while This Is Not a Test offers enough gore and a compelling soundtrack to engage dedicated fans of zombie films, its overall critical reception suggests it may disappoint those looking for fresh storytelling or a sophisticated take on the genre. As it stands, the film seems to deliver familiar thrills and chills without elevating the zombie horror experience.