You project the game field onto a the wall (in the case of Ground Kontrol, we taped up a few pieces of paper, which worked fine) and interact with objects using a laserpoint.
An ingenious new laser called Waterlase adds to that the ability to cut through dry teeth and bone by casting a cloud of hot water vapor around the laser's cutting point, a couple of millimeters from the tooth.
With no designated spawn point of anti-vehicle weapons like the missile pod or Spartan laser that could counter it, our team was left with practically nothing we could fight it with as our own vehicles were being stolen or destroyed while we were dead.