Pax Britannica

From the introduction: [Different players] want dinosaurs, guns, swashbuckling, robots, and magic, and the Pax Britannica setting was a way to produce a world in which all of those things can coexist without being cheap or gimmicky. At one time all of the things in this game were thought to be factual, all that I did is assume that they are and extrapolate from there. User summary: The web site features a complete role-playing system and a well-developed and quirky setting that is internally consistent.