The Half-Life 2 with Deathmatch DVD collects two of the must-have shooter games, bringing you twice the action. Start out with Half-Life 2, where you return to the alien research facility called Black Mesa. The aliens are now pouring into our world and you"ll join the resistance movement to stop them. Battle it out with friends in crazy, realistic mulitplayer action with Half-Life 2: Deathmatch. Then test your tactical abilities with Half-Life: Source -- where the gaming kicks up a notch through the amazing Source game engine. Hordes of new aliens and other enemies, plus a plethora of new guns and weapons Amazing new graphics with pre-rendered cutscenes that look like they came from the movies More realistic physics - Objects have varied and appropriate mass, density and physical properties