We learned the basics in Black Mesa East, experimented with its lethality in Ravenholm, and used it from then on for exciting activities such as stacking crates, tossing barrels, pushing around poor headcrabs, and eventually making Combine soldiers into personal ragdolls. A simple concept, executed perfectly in the game – and the perfect tool to demonstrate the physics engine. You can call it that if you really want to.īut to us it’s the Gravity Gun. Half-Life 2’s revolutionary weapon was undoubtedly the Zero Point Energy Field Manipulator.