Prior to E3 2012, images leaked from a Ubisoft trailer never publicly shown at the event suggested the publisher was working on a new IP. Today, a video dug up by internet sleuth Superannuation reveals it an ancient Egypt-set game called Osiris in development at Assassin’s Creed studio Ubisoft Montreal.

The video comes from Mark Kilian, who was commissioned by Ubisoft to create the trailer. At his website, you’ll see a “rough cut demo” of the trailer, featuring behind the scenes mo-cap work, artwork of earthquakes, pyramids, and other ancient Egyptian-type things.