Hey,
Fistly, excuse me if I don't write proper english, I'm french.
I'm a huge fan of both the alien and predator franchise (but in fact mostly of the old movies and games, I don't really approve with what R. Scott has made of the saga in his last movies. And the last Predator, well... :/ ).
I have a nice collection of comics from both universes. My favourite would be the one with Machiko Noguchi, AvP Wars.
I used to write fanfics on the AvP universes, but it's been a long time.
I also created an online game on the universe, Predalia, but it's in french (I'd like to put in in english as well, but it's a lot of work). I'm not sure if I can give the link there or create a post to describe the game. The graphics may be too simple, but I'm programming it in php.