This is a great setting for use with the Mongoose RuneQuest or Chaosium's Basic Roleplaying systems (either one works, they are from the same rpg 'family').
Basically it is an alternate earth setting, the English Civil War, except with magic and steampunk inventions, great stuff.
The setting and content is great, which gives this product it's 3 stars from me. This book would be worth 4 stars if it had included more Magic and Clockwork Inventions, but I guess they'll put more examples in later supplements.
If they had produced it as a hardcover book I would have given it another star, as they would of saved me the hassle of covering the book myself.
Hopefully I'll get some reasonable unique gaming sessions outof this setting, it's hard not to be impressed with it.