half-life is one of the best FPS ever made!! The story is goes like this: You are Gordon Freeman, a scientist working at a top secret labratory in New Mexico, called the Black Mesa Research Facility. when doing a normal routine science experiment, things go terribly wrong and you have opened a portal between an alien world and the Black Mesa research facility!! The point of the game is to fight your way to the surface and make it out alive! but that is no easy challenge, for the alien AI is smart and the damage they can cause can be severe.you also fight soldiers trying to cover up the experiment and trying to eliminate all the witnesses. you will die many times, but somewhere inside you, you have the courage to keep on going. there are also many weapons to choose from in this game, but u must find them first. these are some examples (there are too many to list, ill just list the basics) MP5 submachine gun with a M203 grenade launcher on it, Glock pistol, Crowbar for wacking aliens, Rocket Launcher, Grenades, shotgun, crossbow, and trip bombs. there are many others too!!! this game is not only very hard, but very long. on easy mode it took me about 2 and a half months to beat it. that sounds crazy, but its worth it and soon you'll find yourself addicted and not being able to stop clicking the mouse button. i highly reccommed this game to all FPS addicts. A MUST HAVE!!! >>>>>>>>>