Summary: I choose this rating because the book is good. What I like about the computer game is that it’s the classic gem-swapping game that started the craze! Swap adjacent gems to match three or more sparkling jewels. The more matches you make, the higher your score. Relax to entrancing music and awesome hi-res graphics. Get hints-on-demand when you’re stuck. Ready for a bigger challenge? Try the Time Trial in both advanced and expert modes!