Too bad they killed off Hicks in A3, or they might have been able to make it from his perspective without completely ruining it.
As it is, I don't really see room for a sequel. I mean seriously, Xenomorphs on Earth? That'd be a bit...apocalyptic?
Also, with Ripely being a clone, the Alien series has lost something that it simply cannot replace. I mean, seriously. Ripley as a clone is a lot less inspiring.
Also, they couldn't get Sigourney to do it, she's like 60 years old, and unless they put in some gay 'accelerated aging process' like they did with Star Wars....
...Just, no. I don't think Alien 5 is going to happen guys. A Predator 3 would be more likely.
And as for the game...Well, here's hoping it comes out in Aussie.