FULL SPOILER-FREE REVIEW @ https://www.msbreviews.com/movie-reviews/spiderhead-spoiler-free-review
"Spiderhead contains a fascinating high-concept sci-fi premise, but even with an extraordinary cast, it falls short of its narrative potential.
Chris Hemsworth proves again that he's one of the most underrated actors working today, while Miles Teller and Jurnee Smollett share excellent chemistry. Technically, Joseph Kosinski and his team are able to generate an uneasy atmosphere in a single location without forgetting some visually impressive shot selection.
Nevertheless, the story loses energy and focus during the second act, leaving dozens of creative, genuinely captivating paths unexplored or underdeveloped, ultimately choosing the safest, most generic alternative. Revelations and twists are somewhat inconsistent but undeniably impactful.
I still highly recommend it. I'm very curious about the general audience's reaction."
Rating: B-