In celebration of today's release of Half-Life 2, Icons looks at the history of the title. Half-Life changed gaming in that the main character wasn't a soldier or the stereotypical hero, it was a common scientist that just happened to be at the wrong place at the wrong time. This episode looks back at the original game and follows the development of the sequel. And you'll see why Half-Life 2 is "the most important game you'll ever play."