Making a film about an online video game is not itself a bad idea. The makers of the film are probably thinking that there's no way that they can lose given the hundreds of thousands of young folks in the country who are currently addicted to Dota. However, reactions from real Dota players are mostly negative.
What boggles me is that this movie is actually being shown in cinemas. Oh well, they are probably doing something right. Something that we don't know about. Anyway, below are the trailer and poster for the film.