A few hours after VorpX teased a special build of their injection driver to add VR support to Aliens Isolation, modders on the Oculus Rift subreddit have found and reenabled the real, native Oculus Rift support from the demos Sega showed off at various conventions. Apparently it's as easy as modding a few ini files and launching the executable with some command line options:
Credit to /u/popcorncrackle, /u/hagg87, and /u/Wookiee81
1) in ENGINE_SETTINGS.XML (found in the DATA folder) change the stereo options to:
<Setting name="Stereo Mode">
<Quality name="Rift" precedence="4"/>
<Quality name="Off" precedence="4"/>
2) Set the Oculus to extended mode.
3) In the oculus configuration utility pause the service.
4) Start the game.
5) To play the game normally, reactivate the service by opening the display mode and set it to "direct to rift" and viola.
Tested it and it works... HOWEVER.
Positional tracking is not yet working, Scratch that... the light does not come on but POSITIONAL TRACKING WORKS... you can lean around corners!! oh my god it is terrifying!
Pretty amazing to have this back in the game within a day of it releasing.
EDIT: I'll be live streaming the game tonight, at 8 CST, with some friends, using a rift, plus a webcam fixed to our faces for reactions. I'll be broadcast from here: http://www.twitch.tv/krejlooc