The Luna101: Book 1

When Nina and her two best friends Samatha and Alicia realize that half of the world has turned into video game characters the problem gets put into their hand to fix. They discover a organization against The Luna101 (the computer that causes people to turn into video game characters) and discover that there is magic hidden deep in every human, and playing that game sucks it away. Will they be able to save the world from this horrible catastrophe? Or will they fail and plunge the world into a darkness?