I am looking into some game design books and I need some second hand opinions. I was thinking of getting this http://www.amazon.co.uk/Mastering-Unreal-Technology-Introduction-Beginners/dp/0672329913

I've been looking into UDK and I am trying to do stuff in it now but has anyone else tried any books that are actually useful when it comes to game design?

http://www.amazon.com/Beginning-Programming-Premier-Press-Development/dp/1592002056 as the author is pretty reputable

I think he's trying to get better at game design, not worse.