Simultaneously a literary movement, ultra-hip subculture and burgeoning cottage industry, Steampunk is the most influential and arresting new genre to emerge from the late twentieth century. Spinning tales populated with clockwork Leviathans, cannon-shots to the moon and coal-fired robots, it charts alternative histories in which the British Empire never fell or where the atom remained unsplit. This wide-ranging, beautifully-illustrated and much needed history explores the genres many intricate expressions, tracing its development in fiction, cinema, television, comics, videogames and beyond.