Science Fiction set in alternate Victorian timelines interests many people and there are several works of fiction such as Bruce Sterling's and William Gibson's "Difference Engine" and several of Michael Morcock's books, notably the "Nomad of Time" trilogy. There are also several games based on the idea.
Below are a couple of wild ideas from my self and my friend Ed.
A New Small Arms Rules System for Space 1889. This gives a more realistic and detailed game than the original rules without making things unduly complex. Using this system you can adapt any weapon of the period to the game.
