Basically “The Blob” set in space or “Alien” without HR Giger’s influence, but, really, surprisingly for a big-name Hollywood movie (Jake Gyllenhaal, Ryan Reynolds), really not bad for a space monster movie. If “not bad for a space monster movie” sounds appealing to you, and you’re able to constrain your expectations to that, worth a watch. I liked it ok, which is more than I expected.