I just finished watching the original Alien movies. Watching Resurrection made me yearn for a Alien RPG. It would be squad-based, isometric, tactical style game, like the Baldur's Gate games, or the Pillars of Eternity ones. You would have your main character, plus up to 5 companions. They might be NPCs you meet with their own backstories and quests, or generic adventurer's you can create yourself (like in the Pillars games), or a mix of both.
The story might be that you are on a world infested with Xenomorphs. The goal, survive and escape. You work your way through the game world, meeting people and recruiting them, or fighting them. You pick up weapons along the way, maybe find gunsmiths where you can upgrade them at certain points, etc... Plus all the usual leveling up with skills.
Your team ought to be a variety of types or "classes". Mercenaries, pirates, scientists, engineers, doctors, thieves, and so on. Each ought to have something they can add, and offer different ways to resolve problems. An engineer might be able to hotwire a door, a soldier might be able to blow it open, etc...
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