Snapping an alien%26rsquo;s teeth through a human face is gruesome. Pouring rounds out from a pulse rifle at flickering silhouettes is scary as hell. Lifting your claw to claim a trophy skull is simple fun. And with developer Rebellion returning gamers to the world of Aliens vs Predator today, there%26rsquo;s never been a better time to glance back at some of the best games to embrace the Alien, Predator and AvP films. While not comprehensive, here%26rsquo;s a look at the ones that are still fun and worth checking out after all these years.