Ubisoft today announced that a playable version of Soul Calibur IV will be available at Play.com Live this weekend. Play as Darth Vader or Yoda in the tournaments and you will have the chance to win a brand new Dodge Nitro SUV. In addition, Ubisoft will be offering the lucky attendees to the show a chance to win one of the two holidays to Las Vegas to celebrate the imminent release of Tom Clancy’s Rainbow Six Vegas 2 on PC, Xbox 360 and PS3.