For use with the Arduin Eternal game system developed by Emperors Choice Games & Miniatures Corp. This book has a greater amount of Cultures to select from when creating your characters and also includes an two different index's for the second version (only version available as of 06-2010) of Arduin Eternal. One index is specifically for the rules of Arduin Eternal and the other index is specifically for the skills in Arduin Eternal if one chooses to play with them. This IS NOT A STAND ALONE product.