Simon Pegg says the film industry is still ''juvenile''.

The 'Star Trek Into Darkness' actor says ''fan culture'' is making mainstream cinema childish and he noted attempts at darker approaches to films like 'The Dark Knight' don't cover it up.

He said: ''I've been thinking things over a lot recently. We've living in a world where fan culture has taken over almost completely.

''I remember at university reading 'America' by Jean Baudrillard, of all people, about the infantilisation of society - it completely predicted what's happened in cinema.

''The vast majority of big mainstream entertainment is juvenile stuff. No matter how much you dress it up in darkness and seriousness, 'Batman' is still 'Batman'.''

Despite seeming disappointed with the shifting trend in movies, the 43-year-old star admitted his new film 'The World's End' is ''extremely silly''.

He told The Sunday Times newspaper's Culture magazine: ''It's about a group of five friends who are rallied together by one of their number - but really the root of the film is about becoming 40. '''Spaced' was about avoiding commitment, 'Shawn [of the Dead]' was about growing up.

''This film is about recognising your place in the world as an adult. This is the most overused word in film literature at the moment, but it is quite 'dark'. It's also extremely silly.''