Alien versus Predator is a movie mix game that allows you to be Alien (My favourite), Predator (Very good weapons) and a colonial marine (the worst).
As the Alien you are the terroror the galaxy. Predators and marines are your dinner.You can climb up-down to walls, take an energy boost with every enemy you eat, kill them with your hands, make them a well-cooked dinner with your acid-blood, cut them at half with your tail and make them big holes with your mouth and teeth.
As the Predator you are the ultimate hunter. All marines and Aliens are just for fun. You have the best weaponly, you can be invisible and you have very good vision modes. But you must beware because you are vurnable to flame.
As the Marine you are a scared marine in LV-624 and you must survive with your Pulse Rifle and M-41 granades.