That was a truly engaging and amazing movie. It keeps you watching till the end and also you must stay with the characters through every single scene.
The rhythm of the movie was fast enough and it rarely had waste of time as the sequences happened one after another in a way that did not let you take your eyes off them.
One more point about it is that the the reason behind all these and all those plans made to lead the characters to death was not some silly fact about existing an intelligent psychopath who manages all the deadly plans or it was not even a personal revenge, but it could relate to some real fact that might exist. The fact that there might be some rich people who pay a great amount of money to those escape room designers each year to plan that brutal deadly game only to watch for fun whether it was real or not was scary to me.
I personally liked the movie and would recommend to watch