I Am Alive doesn't add a lot to the post-apocalyptic conversation. It's mostly set against a backdrop of ideas you've read or seen before - so much so at times that you start to check them off. Oh look, there's the ship stuck in the middle of a city from The Day After Tomorrow, and here's a bit from The Road, and here's a bit from I Am Legend. It's rendered in every shade of grey and brown, filled to the brim with debris and decay - and occasionally quite stunning, like a descent through a train carriage hanging over a crevasse. But it rarely replaces the memory it's borrowing from your bookshelf.