Here's the fourth Dark Void developer diary. At slightly over 4 minutes long, this trailer examines 'Tesla uses his skill to take salvaged parts of Watcher tech to create new items and weapons for Will and the Survivors to use in their fight to overthrow the Watchers and return to Earth'. Capcom's sci-fi action title is coming to PC, Xbox 360 and Playstation 3 in late January 2010.