Alien and Predator are iconic sci-fi horror franchises that have inspired many must-play games.

While most people primarily think of the movies, the Alien franchise has also had a significant presence in video games since the 1980s. That presence continues today, with more titles on the way.

Alienware has announced that its Steam Machine -- the Alienware Alpha -- will be available in November for $550. Curiously, though, the Alpha -- which should be the first commercially available Steam ...