Above is a feature video for the now cancelled gaming title Gotham By Gaslight, based upon the DC Comic of the same name.
Apparently the game was centred around the adventures of a Victorian styled Batman, battling crime on the cobbled streets of London town while attempting to track down Jack The Ripper and bring him to justice. Game developers Day 1 and THQ pitched the idea of Gotham By Gaslight with concept art and the prototype video above, but for reason they were unsuccessful, which is a great shame as the idea of a steam punk themed Batman game sounds amazing.
(via What Culture)