A very topical science fiction series altough its quite a few years old. VR/Telepresence. Ender Wiggin gets recruited while very young to help fight of an alien invasion. To find out why it isn't as cheesy as it sounds, you really have to read it, telling anything more would...

It's been nice doing a series with a theme. The central image for in the first book is what was used to create all the images and backgrounds, trying to stay within the same alien feel.