Steam­punk is a genre and aes­thet­ic inspired by Vic­to­ri­an-era indus­tri­al­ism that is simul­ta­ne­ous­ly retro and futur­is­tic. It imag­ines a world of advanced tech­nol­o­gy some­how pow­ered by steam and mechan­i­cal devices rather than elec­tric and gas engines and mod­ern micro­elec­tron­ics. Steam­punk mech­a­nisms are often com­plex and elab­o­rate – con­struct­ed of gears, cogs, heavy brass plates and fit­tings, all held togeth­er with lots of riv­ets, along with a lib­er­al use of black and red leather.