Due to Computer generated imagery (CGI) effects the film is watchable Where do I start, OK, superheroes saving the earth from aliens, a recurrent and also favorite theme for the Hollywood to score big at box office.
This film is watchable due to CGI effects. Why this film is such a box office hit? Well, may be because of underlying desire of every human being to be a hero in one way or the other.
Eccentric super heroes and silly story dominates the film. The story is for kids not for me as I couldn't connect with it.
In conclusion, go and enjoy this film for its CGI effects and Physics defying stunts.