While not original, I've decided to port over Leading Edge's Aliens to BRP. I know somebody already worked out alien stats and there's a xeno stat block in the rulebook. I recently worked on a Word doc character sheet too. The one thing I haven't decided on is whether to group guns into broad categories or make them distinct and separate; such as "pulse rifle", "sniper rifle" vs. "small arms". I'm also using hit locations, fatigue and sanity. I think there's a case for post traumatic stress, phobias, etc. in the alien universe. Aside from the aliens, I think the setting as whole is a gritty