Even though the movie hasn't been released anywhere in the world yet, 'Captain Marvel' already has - as of writing - 925 one-star ratings on IMDb, enough to push the movie down to an average of 5.4 out of 10.
IMDb ratings, it should be pointed, are user-generated. In other words, anyone can log on and rate it whatever they like. With the likes of Metacritic or Rotten Tomatoes, it's scored by critic ratings where there's an actual written review to back it up. Not only that, critics have to put their name to it.
Here's a screenshot of the ratings for 'Captain Marvel' as they stand on IMDb.
Speaking of Rotten Tomatoes and Metacritic, 'Captain Marvel' has both positive ratings from both - 84% from Rotten Tomatoes, and 66 Score on Metacritic. While our Dee Molumby gave it a four-star rating and said that it "gives everything a fan girl or boy could want – spectacle, action, heart, and inspiration," not everyone was quite as effusive.
For example, IndieWire argued that Brie Larson couldn't "save this generic Avengers prequel from being among the most disappointing Marvel movies," whilst AP said that "the first female-led movie of the MCU deserved more." THR wasn't any better, saying that 'Captain Marvel' was "not dull, exactly, just mundane, marked by unimaginative plotting, cut-rate villains, a bland visual style and a lack of elan in every department."
However, the LA Times, ET, and the Guardian all gave positive reviews. In particular, the LA Times said that 'Captain Marvel' and Marvel themselves "(have) come to recognize, as this film proves, that even effects-heavy behemoths can benefit from a directing touch that is human not programmatic, that understands character and nuance and can create scenes with an emotional heft we might not expect."