A free competitive first person shooter based on the demo that is available with UDK. Use your guns, sword, jet boots and your ability to temporarily attain invisibility to gain the upper hand on your opponents and, ultimately, win your battles.
The pic gives an example of the kind of chilly/creepy atmosphere the outdoor portions of the maps for Ghost Hunt mode will have. The fog limits visibility and the trees break up line of sight allowing the ghost to close in.