I'm doing my best to not rate this movie against the book but it's very hard. This movie falls short on intensity, horror, and character building. The characters seemed to fall into typical cliché roles. The premise is interesting and while it seems rushed and doesn't give details or follow through on individual situations the actors and acting are great, the special effects were pretty good. It was entertaining and worth the watch. Having said that...

Bird Box the book is an intense, gruesome, scary, page turner with excellent characters, probably one of the best horror novels in recent years. It's unfortunate they didn't do better to follow the story from the actual book which was amazing.

I've seen some reviews mentioning The Quiet Place.... But while they seem to have the same type of Scifi, unexplained, post-apocalyptic theme it's not really fair to compare. Bird Box the movie begins...at the beginning and doesn't just focus on survival but gets pretty tangled up in the social aspects of strangers that are forced to cooperate to get by.