^You just need AI on Steam.
I played this all the way through on my Rift about 2 weeks ago. Hands down the best and scariest VR experience so far, and one of the best gaming experiences I've had (also helps that I'm a fan of Alien). Having said all that maybe wait for a future update of MotherVR to sort out some control issues. Some of the in-game buttons you need to manipulate either don't work or have the wrong button prompts using Oculus Touch. Or you could play on a pad.
The story is pretty trash if you pay attention to it, but the atmosphere is just awesome, and the way the game uses sound to build tension is incredible. The game also looks and sounds incredibly authentic to the first two movies (and runs great btw). Anytime the alien is around (which is most of the game) it's just great fun. Yes you'll be terrified, and you'll probably made some silly noises while playing, but you'll also have a huge smile on your face.... as you're being eaten