All things steampunk.
Steampunk is a subgenre of speculative fiction which came into prominence in the 1980s and early 1990s. The term denotes works set in an era when steam power was still widely used -- usually the 19th century, and often set in Victorian England -- but with prominent elements of either science fiction or fantasy, such as fictional technological inventions like those found in the works of H. G. Wells, or real technological developments like the computer occurring at an earlier date. It is often associated with cyberpunk and shares a similar fanbase but developed as a separate movement (though both have considerable influence on each other). Their main difference beyond the chronological differences in settings is that Steampunk settings tend to be less obviously dystopian.