From the publisher website: Steel and Glory, Hearts of Iron is an expansion for the Steel and Glory game system. Now you can add new magic and characters to the mix and watch as the battles changes even more. Within you will find new characters for the Dwarfs and Blood Lord factions, rules on using items and other magics and tons of other new stuff. This expansion is not a complete game, and you will need one or more of the Steel and Glory game sets to use this product.