Full-Length Thor: The Dark World Trailer Online

'Before the universe, there was darkness. And it has survived...'

A new trailer for Thor: The Dark World has appeared online, despite the fact that this is Odin's Day and not - as has become traditional for this film - Thor's Day. But don't worry: the Thunder God is very much present and correct, standing up to defend the world against a tide of darkness that threatens "the very fabric of reality".

This time around Asgard is under threat from the Dark Elves of Svartalfheim, led by Christopher Eccleston's Malekith, and Earth too faces destruction at the hands of this still-mysterious force. Meanwhile, Natalie Portman's Jane Foster gets an outing to Asgard to visit the in-laws, and Chris Hemsworth's Thor is forced to call on his treacherous brother Loki, who seems to be the one person around who might have useful information on this new enemy. We guess that's who he was studying with between the first Thor and The Avengers.

Much of this footage was shown at Comic-Con, but there are new segments of death and destruction (especially around Greenwich, which is in for a really bad day) and this is missing the finally shocking shot of that selection (read our Comic-Con article for more on that, but beware potential spoilers). What it does have is more of Tom Hiddleston's Loki in prison and more crashing wreckage than previous clips.{Thor The Dark World Empire Images}

It's all directed by Alan Taylor and also stars Idris Elba, Anthony Hopkins, Rene Russo, Kat Dennings, Zachary Levi, Jaimie Alexander, Stellan Skargard and Ray Stevenson.

Thor: The Dark World hits cinemas on October 30. Check out our interview with Tom "Loki" Hiddleston about the film and his appearance at Comic-Con below.