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Shudder's 'This Is Not a Test' Earns 41% Rotten Tomatoes

2/21/2026

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Summary

Story summary

Shudder's new R-rated zombie horror film This Is Not a Test has a 41% Rotten Tomatoes score from 22 reviews.
The film adapts Courtney Summers' YA novel and follows Sloane, played by Olivia Holt (the actress), through a zombie apocalypse and explores themes of abuse.
Critics cite a lack of technical polish and no clear innovation, though Holt's performance is praised and the supporting cast falls short.

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Story summary

Shudder's new R-rated zombie horror film This Is Not a Test has a 41% Rotten Tomatoes score from 22 reviews.
The film adapts Courtney Summers' YA novel and follows Sloane, played by Olivia Holt (the actress), through a zombie apocalypse and explores themes of abuse.
Critics cite a lack of technical polish and no clear innovation, though Holt's performance is praised and the supporting cast falls short.