Those of you who’ve grown up playing the Half-Life 2 video game will definitely recognize the alien parasitoid called the Headcrab. Now, you can have the Headcrab sitting snug onto your head. Before you begin to think that this is some kind of joke, let me explain! I am talking about an outrageous piece of fashion called the Headcrab Hat which is being sold online by Valve Software. Those who preferred the older Headcrab of Half-Life would be disappointed as the Headcrab Hat comes only in a Half-Life 2 version. The Headcrab Hat will fit almost any head thanks to it’s adjustable velcro strap. So, if you want to look like an absolute Half-Life game freak and even scare a couple of kids while you walk around the neighborhood, you can buy yourself the Headcrab Hat for an inexpensive $29.99 here.