This is the only video showing gameplay footage of the cancelled RPG Aliens Crucible by Sega. I originally discovered the footage on the summer of 2009 hosted in a public web server from a devs' portfolio. I later updated it onto Youtube in January 2010. This upload is the original non-tagged and best quality version of that video.
The file dates from November 2007 and shows prototype footage. Most of the assets shown here are placeholders and are in no way representative of how the game looked at later stages.