all trilogys can be finished pre alien, alien, aliens alien3, alien r, ?alien? predator, predator2, predators avp, avp r, ?avp? it could be done, but should it? pre alien sifi horror from someone aproved by ridley scott sounds good predators action sifi from troublemaker studios sounds ummm ok? alien ripley sifi thriller with sigourney weaver could be good? avp3 sifi adenture starring the most badass predator the galaxy have ever seen? a predator stripped of his weapons and exilled to a planet most kill all the aliens on it to get home to stop her madness ripley8 must find the alien homeworld but will it help her mind