Advanced facial animation system delivers the most sophisticated in-game characters ever seen.From pebbles to water to 2-ton trucks respond as expected, as they obey the laws of mass, friction, gravity, and buoyancy.The detailed particle system allows for dynamic smoke, fire and other effects filling every scene.Bullets leave their mark on the world, objects, characters - everything.Guards in a prison can use flanking maneuvers and support tactics to take on an alien threat or fashion weapons from whatever is at hand Character AI interactions change with context.Characters are powered by advanced skeletal animations and ragdoll physics, allowing them to be much more agile and negotiate more complex surroundings.Freeman will also meet a new female character, Alyx, whose mother was killed during the events of the original game. In Half-Life 2, Freeman can expect to encounter several characters from the previous game, including Barney the security guard and the mysterious G-man, for whom Freeman now works. The sequel to Half-Life, one of the most popular action games ever made, will feature the return of former Black Mesa research associate Gordon Freeman. Price: $89.95 Available: Now Half-Life 2 product reviews