The thing is that Warcraft has so much story available to it. For the fans, there are some key stories they really want to see on screen. I won't be doing those.

My biggest difference with our film and those kinds of science fiction films is that they are going from one special effect set piece to the next, what we were doing was more of a character study. And I think that is the freedom that you get by doing an Indie film. You can only really do that with a lower budget. So I understand where the conflict is between those two priorities.

The beauty of science fiction is its open canvas. You can hypothesize about any element of the world. It doesn't have to be laser battles and things exploding, you can be JG Ballad and maybe just change one little thing about the real world and that becomes science fiction.

In my opinion, having worked in the games industry and still keeping in touch with a lot of those guys, there was definitely a time when they saw themselves as the little brother of the film industry. But they kind of went off in a different direction and now see themselves, I think, as being far more interesting and ahead of the film industry. They haven't just caught up. They've gone off in a different direction and exceeded the film industry.

For me, two of my favourite science fiction films are Blade Runner, which is fantastic, and Terry Gilliam's Twelve Monkeys. Both of those were smart science fiction films hitting more of a medium budget, and I desperately hope there is an audience for that kind of film because I would love that to be my next film, on that kind of scale.

I was doing the promotion for Moon in LA at the same time that Tony Scott was there with [The Taking of] Pelham 123. But obviously he was so concentrating on his own film that he didn't even know I was doing a feature film.

There are things which need to be shown in the trailer in order to let the audience know what kind of film it is that they're going to be expecting to see.