Perhaps one of the most comprehensive guides to the Victorian era ever written for gamers, Verne manages cover every aspect of this world in ways that are sometimes intimidating in their detail and frankness. If you were to have a Victorian era adventure, this book should be at the top of your list of reference materials. I was especially impressed with the descriptions (often from period publications) of how this 'alien' world works. Then, to make things even more impressive, Greg Porter has included excellent sections on the technology and backgrounds that turn an already useful guide into a "steampunk" game.
Verne rivals Castle Falkenstein as one of the best written and designed rpgs for this era (though, surprisingly, Greg doesn't mention CF in his bibliography- wonder why...?).
[5 of 5 Stars!]