Ever sat watching the Premier League, the Super Bowl, or even a sports game like Rematch, and thought: how do they create those slick on-screen graphics? The answer, more often than not, is Unreal ...

If you've ever wanted to get to grips with the engine which is at the heart of some of each year's biggest releases, the Unreal Engine, you may have been put off by the daunting size of the thing.