Energy Ball

Energy balls are concentrated balls of dark energy plasma, a form of exotic matter that disrupts spacetime and disorts light. They are generated by Combine dark energy reactor systems and transmitted through the plasma conduits of Citadel power transfer systems. Energy balls can be contained within specialised dark energy cores, portable long-sterm storage devices that can later be used in Combine dark energy devices. As well as power generators, dark energy cores can be plugged into pulse rifles, which can store the energy until released by the rifle's secondary fire.

Energy balls repel themselves from normal matter, bouncing off of walls ceilings and floors without losing inertia. However, when they strike organic matter, it is destroyed, killing the being instantly and causing it to disolve into nothing.

Energy balls are subject to zero-point energy fields, allowing them to be grabbed and manipulated by the gravity gun.