The reviews I am reading seem a bit harsh. I would give it 3.5 stars out of 5. It is extremely enetertaining from the very start. Interesting structure, agreeably the puzzles seem a touch far fetched, meaning how they solve them in that tight time constraint. I mean they lost the genius first 😂 so who would have the ability for such elevated thinking ? The ending is a touch disappointing but with an eminent sequel, filmmakers will have the opportunity to dazzle and close doors left open. The acting was great for the genre! Definitely worth a watch if you like Saw but found it too gory. It’s basically a really really dark “Rat Race” spin off.