Simple, straightforward mechanics that reinforce the claustrophobic, intense feel of the Alien movies. The Stress mechanic is brilliant, and a great way to emulate the movies. The two play modes (Cinematic and Campaign) are really to different play experiences that share a common set of rules and allow you to have two different game experiences. Overall, excellent mechanics, great setting material, and a gorgeous book combine to make the Alien RPG one of the best games on my shelf.
