The grand guignol here and waiting for the inevitable sequence of gory deaths reminds me of Final Destination, or British film Severance (2006) one of the best comedy horrors ever made.
But it has older roots or the King short story does - stories like The Monkey's Paw and more. It is like those old portmanteau Hammer Horror films where an object is haunted or evil and brings bad things on those who buy/find it. From Beyond the Grave (1974) with Peter Cushing as the knowing shop owner is one. And then there is the absolute classic Night of the Demon (1957) ('it's in the trees, it's coming' sampled by Kate Bush from it on Hounds of Love title track 1985)
It jumps the shark a bit in the third act imho. The start is more interesting tbh.
Clever casting with the same actor Theo James playing the chalk and cheese twin brothers, and Christian Convery playing them well as boys too. So good I thought they were played by different actors. Elijah Wood hams it up as a new-age inspirational speaker/author. Other cartoon characters here too. The monkey toy is a great design and suitably spooky too.
So almost 4 stars, as it starts well, but 3 stars with the sagging absurd OTT final act. Subtle it ain't!
A Friday night with friends film! Nothing serious here. So roll with it and enjoy the blood and gore...and laughs...